Research/Terra/ 138450
Task evidence / qualitative-control

Calculate urban sprawl rates for Chinese cities between 2015-2020?

PassQualitative controlUnpublished draft
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The question

138450
Calculate urban sprawl rates for Chinese cities between 2015-2020?
Exact submitted task and declared adaptations
Calculate urban sprawl rates for Chinese cities between 2015-2020?

Task conventions: This is a closed-catalog task. The complete original GeoBenchX source inventory is listed below; it describes available source types, not actual measurements. Do not supplement it with live data or claim numerical evidence from general knowledge. General knowledge may be used for definitions and explanation. Answer the original question as far as this information environment supports, accurately distinguishing observations, inference and uncertainty. This source-availability/control cohort supplies catalog metadata rather than the observation files and is reported separately from computational tasks.
- DATA_CATALOG: Forest area (sq. km)
- DATA_CATALOG: Forest area (% of land area)
- DATA_CATALOG: Electric power consumption (kWh per capita)
- DATA_CATALOG: Annual freshwater withdrawals, total (billion cubic meters)
- DATA_CATALOG: Annual freshwater withdrawals, total (% of internal resources)
- DATA_CATALOG: Agriculture, value added (% of GDP)
- DATA_CATALOG: GDP per capita (current US$)
- DATA_CATALOG: Labor force, total
- DATA_CATALOG: Net migration
- DATA_CATALOG: Fertility rate, births per woman
- DATA_CATALOG: Population, total
- DATA_CATALOG: Rural population, total
- DATA_CATALOG: Greenhouse gases emission, per capita, tons of carbon dioxide-equivalents 
- DATA_CATALOG: CO2 emissions per capita, tons
- DATA_CATALOG: Incidence of Tuberculosis Disease, 2023, Massachusetts Counties
- DATA_CATALOG: Incidence of Tuberculosis Disease, 2023, New York State Counties
- DATA_CATALOG: Rail lines (total route-km)
- DATA_CATALOG: Regional GDP in departments (provinces) of Peru, constant prices 2007, thousand of soles
- GEO_CATALOG: Countries
- GEO_CATALOG: Amtrak railway stations
- GEO_CATALOG: Railway lines in Bangladesh
- GEO_CATALOG: Cities and Towns of the United States, 2014
- GEO_CATALOG: Railway Network of North America
- GEO_CATALOG: Current Wildland Fire Incident Locations, size in acres
- GEO_CATALOG: Rivers in North America
- GEO_CATALOG: Lakes in North America
- GEO_CATALOG: USA counties borders
- GEO_CATALOG: USA states borders
- GEO_CATALOG: Earthquakes occurences and magnitude March 15- February 14 2025
- GEO_CATALOG: Rivers in South America
- GEO_CATALOG: Seaports of Latin America
- GEO_CATALOG: Railways in Brazil
- GEO_CATALOG: Mineral extraction facilities in Africa
- GEO_CATALOG: Power stations in Africa
- GEO_CATALOG: Railways in Africa
- GEO_CATALOG: Municipalities of Brazil
- GEO_CATALOG: Regions of Peru
- GEO_CATALOG: Provinces of Peru
- RASTER_CATALOG: Accumulated snow cover season 2023-2024, USA, inches
- RASTER_CATALOG: Accumulated snow cover season 2024-2025, USA, inches
- RASTER_CATALOG: Tibetan Plato South Asia flood extent, August 2018
- RASTER_CATALOG: Bangladesh population, 2018, people, resolution 1 km
- RASTER_CATALOG: USA population 2020, people, resolution 1 km
- RASTER_CATALOG: Chile population, 2020, people, resolution 1 km
- RASTER_CATALOG: Angola population, 2020, people, resolution 1 km
- RASTER_CATALOG: Peru, Bolivia, Argentina, Chile flood, February 2018
- RASTER_CATALOG: Peru population, 2018, 1 km resolution
- RASTER_CATALOG: Brazil population, 2018, 1 km resolution
- RASTER_CATALOG: Algeria population density per 1 km 2020, 1 km resolution



Give a concise ordinary-language answer. No artificial count, result artifact, workflow or map is required when the answer does not warrant one. Do not invent observations or claim an analysis was run.

Supplied immutable inputs:
[]

Outcome & verification

Operator-reviewed frozen qualitative criteria satisfied; not a numerical GIS result.

Duration
1m 44s
Recorded Blue tool calls
8
Total tokens
110,560
Model cost
Not recorded
Application revision
d50497ea9084f29c91b05406688f87035df98d8a
Release
terra-geobenchx-v1

Recorded final answer

I can’t calculate 2015–2020 urban sprawl rates for Chinese cities from this closed inventory. What the supplied GeoBenchX inventory shows: - It does **not** list a **China city boundary** source. - It does **not** list **China urban/built-up land data for both 2015 and 2020**. - The named city layer is **“Cities and Towns of the United States, 2014”**, and the listed population rasters are for **Bangladesh, USA, Chile, Angola, Peru, Brazil, and Algeria**, not China. Why that matters: - Urban sprawl rates need **city-by-city boundaries** and **comparable urban land area at two dates**. - Country polygons or population totals alone are **not enough**. So the supported result here is: - **No Chinese city sprawl rates can be reported from the supplied inventory.** - I’m not inventing numerical rates. Next action: - Add **Chinese city boundaries** and **China urban/built-up extent or land-cover data for 2015 and 2020**. - If you also want per-capita interpretation, add **matching city population** for those years. ### Limitations - The supplied GeoBenchX inventory lists source types rather than actual measurements. - The supplied inventory does not list a China city boundary source. - The supplied inventory does not list China urban or built-up land measurements for both 2015 and 2020. - The supplied closed inventory does not list the required China city boundaries or China urban/built-up measurements for both 2015 and 2020, so no city-level sprawl rates can be computed from it. - **Chinese cities:** No China city boundary source is listed, so I cannot calculate city-by-city results. - **Urban land change:** The needed China urban or built-up land measurements for 2015 and 2020 are not listed.

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
Not a count-based check
Reported count
Not recorded
Computation verified
Not applicable / unverified
Answer fulfilled
Yes
Full grading and rubric record
{
  "expectedCount": null,
  "actualCount": null,
  "expectedMetrics": null,
  "actualMetrics": null,
  "computationCorrect": null,
  "answerFulfilled": true,
  "adjudication": {
    "reviewedAt": "2026-10-07T06:10:51.505598+00:00",
    "reviewer": "Codex evaluation operator (AI-assisted); not blinded or external",
    "rubricFingerprint": "b65e0260cc602e6a57c1efa9e3ee47f365e514df96551f427461a63ef060aac9",
    "finalEventId": "[resource id withheld]",
    "finalTextHash": "976ad4434766a071f643a1c0f4c8354501ab70f1bbad3fe937da82f6fcbe4ead",
    "snapshotSha256AtReview": "930845e85697a3dce446f6b7e18fecb00ffc74a704d58f44f2803a9b96d82943",
    "evidenceReviewed": [
      "Complete accepted final answer",
      "Recorded tool names, statuses and outputs relevant to claimed work",
      "Recorded workflow/job/artifact presence",
      "Frozen source inventory, task environment and case-specific rubric"
    ],
    "criteria": {
      "specific_obstacle": {
        "satisfied": true,
        "explanation": "Identifies missing Chinese city geography and comparable built-up area in both 2015 and 2020."
      },
      "no_false_proxy": {
        "satisfied": true,
        "explanation": "Explicitly rejects country polygons and population totals as measurements of urban sprawl."
      },
      "scope_honesty": {
        "satisfied": true,
        "explanation": "Names the actual listed US city and non-China population sources and confines the conclusion to that inventory."
      },
      "no_fabrication": {
        "satisfied": true,
        "explanation": "No city rates are reported and no processing is claimed; repeated analysis reads produced no jobs or artifacts."
      },
      "useful_next_step": {
        "satisfied": true,
        "explanation": "Specifies city boundaries and two-date urban extent, with matching city population only for an optional per-capita interpretation."
      }
    },
    "cohort": "metadata-only qualitative control; distinct from computational correctness"
  },
  "qualification": "Operator-adjudicated, not blinded. Reported separately from exact computed/map results.",
  "reasons": []
}

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. get_analysis

    Recorded tool call · completed

  2. get_analysis

    Recorded tool call · completed

  3. get_analysis

    Recorded tool call · completed

  4. get_analysis

    Recorded tool call · completed

  5. get_analysis

    Recorded tool call · completed

  6. get_analysis

    Recorded tool call · completed

  7. Progress update

    I checked the retained analysis record. There isn’t one yet, so I’m recording the requested result and the observed source gap from the supplied inventory before I answer.

  8. update_analysis_brief

    Recorded tool call · completed

  9. get_analysis

    Recorded tool call · completed

  10. Progress update

    I’ve recorded the requested result and the source gap. There are still no executable artifacts because the closed inventory does not contain the needed China city or urban-land inputs. I’m now giving the supported answer directly.