Research/Terra/ 710732
Task evidence / country-change-selection

How many mineral extraction facilities in Africa are located in countries with rapid urbanization

PassComputational taskUnpublished draft
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The question

710732
How many mineral extraction facilities in Africa are located in countries with rapid urbanization?
Exact submitted task and declared adaptations
How many mineral extraction facilities in Africa are located in countries with rapid urbanization?

Task conventions: Rapid urbanization means rural population divided by total population in 2023 minus that same fraction in 2013 is strictly less than -0.03. This is a drop of more than three percentage points, not a 3% relative change. Use WDI SP.RUR.TOTL and SP.POP.TOTL for those exact years. Use original country polygons with CONTINENT=Africa. Use exact ISO_A3/Country Code matching. A point qualifies only when strictly within a qualifying original country polygon. Count original point records once, regardless of operational status. Missing observations, nonmatching country codes, nonpositive denominators and nonfinite derived values are unknown, never zero. Points in unknown-measurement countries and points without valid geometry are unknown. Valid points outside all selected geographical polygons do not qualify and are not counted as unknown. Do not infer locations from point country-name attributes or fetch live substitutes. Maps are optional.



Produce an inspectable selected-point artifact retaining original geometry and benchmark_row_id. End with one fenced JSON object: {count: selected original point records, unknown_count: points with unknown eligibility under the stated coverage rule, unlocated_count: original point records lacking valid geometry, coverage_note: string, selection: {collectionId, itemId, assetKey}}. Explain the fixed years, threshold and coverage in the final answer.

Delivery format: provide the answer object with all fields specified above as final_response on assess_result, alongside the inspected final artifact_refs. This replaces the JSON-code-block formatting requirement above. Blue attaches your explicit selection to the accepted final answer. Finish with a concise ordinary-language answer agreeing with that selected result; do not duplicate the JSON in chat.

Supplied immutable inputs:
[
  {
    "name": "African mineral extraction facilities",
    "edition": "USGS 2021 benchmark snapshot",
    "units": {},
    "collectionId": "blue-generated--[resource id withheld]",
    "itemId": "[resource id withheld]",
    "assetKey": "data"
  },
  {
    "name": "World Bank country boundaries",
    "edition": "GeoBenchX harmonized names",
    "units": {},
    "collectionId": "blue-generated--[resource id withheld]",
    "itemId": "[resource id withheld]",
    "assetKey": "data"
  },
  {
    "name": "World Bank SP.RUR.TOTL",
    "edition": "Frozen GeoBenchX World Development Indicators; use 2023",
    "units": {
      "2023": "people"
    },
    "collectionId": "blue-generated--[resource id withheld]",
    "itemId": "[resource id withheld]",
    "assetKey": "data"
  },
  {
    "name": "World Bank SP.POP.TOTL",
    "edition": "Frozen GeoBenchX World Development Indicators; use 2023",
    "units": {
      "2023": "people"
    },
    "collectionId": "blue-generated--[resource id withheld]",
    "itemId": "[resource id withheld]",
    "assetKey": "data"
  }
]

Outcome & verification

Independent artifact and delivery checks passed.

Duration
26m 54s
Recorded Blue tool calls
64
Total tokens
4,014,410
Model cost
Not recorded
Application revision
d50497ea9084f29c91b05406688f87035df98d8a
Release
terra-geobenchx-v1

Recorded final answer

I found 1,675 mineral extraction facilities in Africa in rapidly urbanizing countries. I used the fixed 2013 and 2023 WDI rural-share change rule, counted a country only when 2023 rural share minus 2013 rural share was strictly below -0.03, and kept only original facility points strictly within original African country polygons. In this benchmark set, unknown eligibility was 0 and unlocated points were 0. Sources: USGS 2021 African mineral extraction facilities; World Bank country boundaries (GeoBenchX harmonized names); World Bank WDI SP.RUR.TOTL and SP.POP.TOTL frozen snapshots, retrieved in Blue on 2026-10-07. ### Limitations - Exact for the supplied benchmark snapshots only; not later source updates. - Exact for the supplied benchmark snapshots only: USGS 2021 facilities, GeoBenchX-harmonized World Bank country polygons, and frozen WDI SP.RUR.TOTL/SP.POP.TOTL values retrieved in this run on 2026-10-07. - Uses the supplied GeoBenchX-harmonized World Bank country polygons. - Uses frozen SP.RUR.TOTL and SP.POP.TOTL benchmark values for 2013 and 2023. - Uses the supplied USGS 2021 benchmark facility snapshot. - Unknown eligibility is defined only by the stated benchmark rule and supplied snapshots.

Independent checks

These checks are separate from the agent's own assessment. A successful job or an assertion of success is not enough to pass.

Expected count
1675
Reported count
1675
Computation verified
Yes
Answer fulfilled
Yes
Full grading and rubric record
{
  "expectedCount": 1675,
  "actualCount": 1675,
  "expectedMetrics": null,
  "actualMetrics": null,
  "computationCorrect": true,
  "answerFulfilled": true,
  "adjudication": null,
  "qualification": null,
  "reasons": []
}

Recorded investigation findings

The agent's reported hypotheses and assessments, retained as evidence of its process—not independent proof that the answer is correct. Failed calls retain their requested verdict, not an accepted assessment.

run_trial · completed

Can I join the supplied rural and population WDI tables to original African country polygons with exact ISO_A3/Country Code matching while preserving one row per country and inspect the resulting year fields for the urbanization calculation?

assess_trial · completed · assessment: sufficient

The trial preserved one row per African country after both joins. All 52 African country polygons matched exact ISO_A3 to Country Code values in both WDI tables. The second join exposed distinct year fields with suffixes: 2013_x and 2023_x for rural totals, and 2013_y and 2023_y for total population. No unmatched African country codes were observed in this benchmark scope.

run_trial · completed

Using the validated African-country join, can I produce the final selected-point artifact and counts under the exact rule: rural share in 2023 minus rural share in 2013 is strictly less than -0.03, points qualify only when strictly within qualifying original African country polygons, and unknown eligibility is tracked separately for unknown-country points and unlocated points?

assess_trial · completed · assessment: sufficient

The full-scope trial produced the requested selected-point artifact and the needed counts under the exact rule. The country calculation created rural_share_change from 2023_x/2023_y minus 2013_x/2013_y for all 52 African countries, with no null derived values and no unknown-country records. Forty countries met the strict threshold, and the largest qualifying rural_share_change was -0.030489985590557878, which is still strictly less than -0.03. The selected-point artifact contains 1,675 original point records with Point geometry and benchmark_row_id present. The unknown-country point count is 0, the ambiguous overlap count is 0, and the source point inspection reported 2,408 valid Point geometries with invalidCount 0, so unlocated_count is 0.

assess_result · failed · requested assessment: sufficient

I found 1,675 original mineral extraction facility point records that are strictly within African countries whose rural-population share fell by more than three percentage points from 2013 to 2023 under the exact rule (2023 rural share minus 2013 rural share < -0.03). All 52 African country polygons had exact ISO_A3 to Country Code matches and usable 2013/2023 WDI values in this benchmark scope, so there were no unknown-measurement countries. The selected-point artifact preserves original point geometry and benchmark_row_id, and the checked counts show unknown_count 0 and unlocated_count 0.

assess_result · completed · assessment: sufficient

I found 1,675 original mineral extraction facility point records that are strictly within African countries whose rural-population share fell by more than three percentage points from 2013 to 2023 under the exact rule: (SP.RUR.TOTL/SP.POP.TOTL in 2023) minus the same fraction in 2013 is strictly less than -0.03. The verified final workflow output preserves original point geometry and benchmark_row_id. Current workflow evidence shows 52 original African country polygons, exact ISO_A3 to Country Code matches for all 52 countries in both WDI joins, 40 qualifying countries, 1,675 strictly matched qualifying points, 733 valid points outside qualifying countries, 0 unknown-country points, and 0 invalid or missing point geometries. Under the stated coverage rule, unknown_count is 0 and unlocated_count is 0.

Recorded workflow

  1. 01

    African countries

    Recorded vector-filter · succeeded

  2. 02

    Join rural totals

    Recorded table-attribute-join · succeeded

  3. 03

    Ambiguous point count

    Recorded table-group-statistics · skipped

  4. 04

    Ambiguous overlap points

    Recorded vector-filter · skipped

  5. 05

    Original country polygons

    Recorded source · succeeded

  6. 06

    Compute rural-share change

    Recorded vector-field-calculate · succeeded

  7. 07

    Facilities in rapidly urbanizing African countries

    Recorded output · succeeded

  8. 08

    Join total population

    Recorded table-attribute-join · succeeded

  9. 09

    Original facility points

    Recorded source · succeeded

  10. 10

    Match points to African countries

    Recorded vector-spatial-join · succeeded

  11. 11

    Match points to unknown countries

    Recorded vector-spatial-join · succeeded

  12. 12

    Match points to qualifying countries

    Recorded vector-spatial-join · succeeded

  13. 13

    WDI population totals

    Recorded source · succeeded

  14. 14

    Qualifying countries

    Recorded vector-filter · succeeded

  15. 15

    WDI rural totals

    Recorded source · succeeded

  16. 16

    Selected point count

    Recorded table-group-statistics · skipped

  17. 17

    Selected qualifying points

    Recorded vector-filter · succeeded

  18. 18

    Unknown-measurement countries

    Recorded vector-filter · succeeded

  19. 19

    Unknown-country point count

    Recorded table-group-statistics · skipped

  20. 20

    Unknown-country points

    Recorded vector-filter · skipped

  21. 21

    Ambiguous point count

    Recorded table-group-statistics · succeeded

  22. 22

    Ambiguous overlap points

    Recorded vector-filter · succeeded

  23. 23

    Compute rural-share change

    Recorded vector-field-calculate · succeeded

  24. 24

    African countries with WDI joins

    Recorded source · succeeded

  25. 25

    Original facility points

    Recorded source · succeeded

  26. 26

    Match points to African countries

    Recorded vector-spatial-join · succeeded

  27. 27

    Match points to unknown countries

    Recorded vector-spatial-join · succeeded

  28. 28

    Match points to qualifying countries

    Recorded vector-spatial-join · succeeded

  29. 29

    Qualifying countries

    Recorded vector-filter · succeeded

  30. 30

    Selected point count

    Recorded table-group-statistics · succeeded

  31. 31

    Selected qualifying points

    Recorded vector-filter · succeeded

  32. 32

    Original facility points

    Recorded output · succeeded

  33. 33

    Ambiguous point count

    Recorded output · succeeded

  34. 34

    Compute rural-share change

    Recorded output · succeeded

  35. 35

    Qualifying countries

    Recorded output · succeeded

  36. 36

    Unknown-measurement countries

    Recorded output · succeeded

  37. 37

    Match points to unknown countries

    Recorded output · succeeded

  38. 38

    Selected qualifying points

    Recorded output · succeeded

  39. 39

    Unknown-country points

    Recorded output · succeeded

  40. 40

    Selected point count

    Recorded output · succeeded

  41. 41

    Unknown-country point count

    Recorded output · succeeded

  42. 42

    Unknown-measurement countries

    Recorded vector-filter · succeeded

  43. 43

    Unknown-country point count

    Recorded table-group-statistics · succeeded

  44. 44

    Unknown-country points

    Recorded vector-filter · succeeded

  45. 45

    African countries

    Recorded vector-filter · succeeded

  46. 46

    Join total population

    Recorded table-attribute-join · succeeded

  47. 47

    Join rural totals

    Recorded table-attribute-join · succeeded

  48. 48

    Original country polygons

    Recorded source · succeeded

  49. 49

    WDI population totals

    Recorded source · succeeded

  50. 50

    WDI rural totals

    Recorded source · succeeded

  51. 51

    African countries

    Recorded output · succeeded

  52. 52

    Join rural totals

    Recorded output · succeeded

  53. 53

    Join total population

    Recorded output · succeeded

Activity

Recorded actions

Recorded observable actions only, not private reasoning. Raw payloads, geometry, private links and credentials are omitted; full evidence is retained privately. Activity/workflow lists bounded at 500 entries.

  1. Progress update

    I’ll inspect the saved analysis context and the supplied datasets first, then I’ll test the smallest full method that produces the selected points and counts.

  2. get_analysis

    Recorded tool call · completed

  3. Progress update

    I found the Blue tools. Next I’m reading the exact metadata for the four supplied snapshots so I can use the original fields and choose the smallest valid computation.

  4. get_collection

    Recorded tool call · completed

  5. get_collection

    Recorded tool call · completed

  6. get_collection

    Recorded tool call · completed

  7. get_collection

    Recorded tool call · completed

  8. get_tool_help

    Recorded tool call · completed

  9. get_tool_help

    Recorded tool call · completed

  10. get_item

    Recorded tool call · completed

  11. get_item

    Recorded tool call · completed

  12. get_item

    Recorded tool call · completed

  13. get_item

    Recorded tool call · completed

  14. Progress update

    I have the four exact snapshots. Now I’m checking their item profiles and small samples so I can use the original geometry and exact country-code fields instead of guessing names.

  15. update_analysis_brief

    Recorded tool call · completed

  16. list_processors

    Recorded tool call · completed

  17. list_processors

    Recorded tool call · completed

  18. list_processors

    Recorded tool call · completed

  19. Progress update

    I have the source fields now. Next I’m reading the exact processor schemas for attribute filtering, joins, numeric field calculation, spatial joins, and row counting so I can build one compact end-to-end trial instead of guessing processor inputs.

  20. describe_processors

    Recorded tool call · completed

  21. describe_processors

    Recorded tool call · completed

  22. describe_processors

    Recorded tool call · completed

  23. list_processors

    Recorded tool call · completed

  24. list_processors

    Recorded tool call · completed

  25. get_tool_help

    Recorded tool call · completed

  26. get_tool_help

    Recorded tool call · completed

  27. Progress update

    One uncertainty matters before the full count: how the two WDI joins name their year fields and whether unmatched codes stay visible as unknowns. I expect one row per African country, with separate joined year fields or an actionable collision error. I’m testing just that join chain now.

  28. Progress update

    The first trial call was just an argument mistake: inspect_outputs belongs beside computation, not inside it. I’m correcting that now and rerunning the same join test.

  29. run_trial

    Recorded tool call · completed

  30. Progress update

    The join method is working. I confirmed 52 original African country polygons, exact ISO_A3 ↔ Country Code matches for all 52, and the joined year fields come through as 2013_x/2023_x for rural totals and 2013_y/2023_y for total population. I’m moving on to the full end-to-end trial now.

  31. describe_processors

    Recorded tool call · completed

  32. assess_trial

    Recorded tool call · completed

  33. Progress update

    I’m running the full private computation now. It reuses the validated joined-country artifact, computes the exact 2013→2023 rural-share change, classifies qualifying and unknown countries, then builds the selected-point artifact and count tables in one pass.

  34. run_trial

    Recorded tool call · completed

  35. inspect_artifact

    Recorded tool call · completed

  36. inspect_artifact

    Recorded tool call · completed

  37. inspect_artifact

    Recorded tool call · completed

  38. Progress update

    I have the full trial outputs. Now I’m doing the final inspections: checking the selected-point artifact itself, confirming the strict threshold on the qualifying countries, and verifying the count tables before I record the final answer.

  39. inspect_artifact

    Recorded tool call · completed

  40. inspect_artifact

    Recorded tool call · completed

  41. assess_trial

    Recorded tool call · completed

  42. Progress update

    I have the completed inspection jobs. I’m pulling their immutable receipts now so the final answer can cite the selected artifact and the checked count tables directly.

  43. inspect_artifact

    Recorded tool call · completed

  44. inspect_artifact

    Recorded tool call · completed

  45. inspect_artifact

    Recorded tool call · completed

  46. inspect_artifact

    Recorded tool call · completed

  47. inspect_artifact

    Recorded tool call · completed

  48. assess_result

    Recorded tool call · failed

  49. get_tool_help

    Recorded tool call · completed

  50. Progress update

    The private trial answered the method, but Blue rejected it as the final selected artifact because final answers must point to a verified non-trial output. I’m promoting the tested computation into a final workflow now, then I’ll inspect that output and record the result.

  51. get_tool_help

    Recorded tool call · completed

  52. get_tool_help

    Recorded tool call · completed

  53. get_tool_help

    Recorded tool call · completed

  54. get_tool_help

    Recorded tool call · completed

  55. get_tool_help

    Recorded tool call · completed

  56. get_tool_help

    Recorded tool call · completed

  57. Progress update

    I’ve got a tested full method. I’m saving it as the final workflow now so Blue can create a verified non-trial selected-point artifact for the final answer.

  58. propose_workflow

    Recorded tool call · failed

  59. Progress update

    The first proposal failed only on contract bindings, not on the method. I’m correcting the exact requirement references now and resubmitting the same tested workflow.

  60. propose_workflow

    Recorded tool call · completed

  61. Progress update

    The saved draft is still only “partial” because it reuses a joined trial artifact instead of the raw country and WDI sources in the contract. I’m replacing that with the full direct computation now so the final workflow cleanly references the original inputs the user required.

  62. propose_workflow

    Recorded tool call · completed

  63. execute_workflow

    Recorded tool call · completed

  64. Progress update

    The final workflow is now valid and complete against the requested sources and rules. I’m executing it so the final answer can point to a verified non-trial selected-point artifact.

  65. Progress update

    The approved workflow finished. I’m reading its exact output receipt now so the final answer can select the verified workflow artifact instead of the private trial artifact.

  66. inspect_workflow_results

    Recorded tool call · completed

  67. inspect_artifact

    Recorded tool call · completed

  68. inspect_artifact

    Recorded tool call · completed

  69. inspect_artifact

    Recorded tool call · completed

  70. inspect_artifact

    Recorded tool call · failed

  71. Progress update

    I have the finished workflow run and its final selected-point output. I’m checking the final count tables and the current source/threshold receipts from this same run now, then I’ll record the accepted result.

  72. inspect_artifact

    Recorded tool call · failed

  73. inspect_artifact

    Recorded tool call · failed

  74. get_workflow_run

    Recorded tool call · completed

  75. inspect_workflow_results

    Recorded tool call · completed

  76. Progress update

    The run finished, but a few follow-up inspections hit a refresh issue while Blue updated the saved workflow state. I’m refreshing the run and pulling the final output receipts again, then I’ll record the answer from the verified workflow artifact.

  77. inspect_artifact

    Recorded tool call · completed

  78. inspect_workflow_results

    Recorded tool call · completed

  79. inspect_artifact

    Recorded tool call · completed

  80. inspect_artifact

    Recorded tool call · completed

  81. Progress update

    I already have the workflow receipts. I’m only pulling three bounded inspections now: the final selected points, the threshold edge on qualifying countries, and the source points’ geometry check. Then I can close this out cleanly.

  82. inspect_workflow_results

    Recorded tool call · completed

  83. Progress update

    I have the final selected points, the threshold edge, and the source geometry check. I’m pulling one last current receipt for the joined country table and the current unknown-country branch so the final assessment uses only verified final-run evidence.

  84. assess_result

    Recorded tool call · completed

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