Research/Terra/ 833518
Task evidence / qualitative-control

Make contour lines showing population distribution in economic corridors of South America

PassQualitative controlUnpublished draft
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The question

833518
Make contour lines showing population distribution in economic corridors of South America
Exact submitted task and declared adaptations
Make contour lines showing population distribution in economic corridors of South America

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
2m 9s
Recorded Blue tool calls
4
Total tokens
128,177
Model cost
Not recorded
Application revision
d50497ea9084f29c91b05406688f87035df98d8a
Release
terra-geobenchx-v1

Recorded final answer

**Result:** I can’t make those contour lines from this closed catalog alone. **What the supplied inventory supports:** - Population rasters are listed for **Brazil (2018, 1 km)**, **Peru (2018, 1 km)**, and **Chile (2020, 1 km)**. - Context layers are listed for **Countries**, **Seaports of Latin America**, **Rivers in South America**, and **Railways in Brazil**. **Main limitation:** - This environment gives **catalog metadata only**, not the actual measurement files, so no contours can be drawn here. - I do **not** see a **South America-wide economic corridor layer**. - Population coverage is **not continent-wide** in the supplied list. - Railways in Brazil and Latin American seaports are only rough context, not proof of South America-wide economic corridors. **Next step:** Provide the actual raster/vector files and either: 1. a South America economic-corridor layer, or 2. a clear rule for defining corridors. Then a partial contour map could start with **Brazil, Peru, and Chile**. **Sources in the supplied inventory:** RASTER_CATALOG — “Brazil population, 2018, 1 km resolution”; “Peru population, 2018, 1 km resolution”; “Chile population, 2020, people, resolution 1 km” GEO_CATALOG — “Countries”; “Seaports of Latin America”; “Rivers in South America”; “Railways in Brazil” ### Limitations - The supplied input is source inventory metadata only; it does not include the measurement files needed to compute contour lines. - No South America-wide economic corridor layer is listed in the supplied inventory. - Population rasters are listed only for Brazil, Peru, and Chile, so continent-wide population coverage is incomplete. - Not yet confirmed: this environment has only source inventory metadata, no measurement files, no South America-wide corridor layer, and no continent-wide population raster coverage. - **Population:** The supplied inventory does not provide actual population measurements here, and it does not list continent-wide South America population coverage. - **Economic corridors:** I do not see a South America-wide economic corridor layer in the supplied inventory.

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": "2026-10-07T08:03:19.263307+00:00",
    "reviewer": "Codex evaluation operator (AI-assisted); not blinded or external",
    "rubricFingerprint": "2463bc1b86da7b81490fbf2bd296e45d3d5b3854dd22ca7e4e56f73a754ab966",
    "finalEventId": "[resource id withheld]",
    "finalTextHash": "1bb3dc4ed62722ed77fb260a16f9404a0e8a51218549a8d4b0985a5c21f177b4",
    "snapshotSha256AtReview": "920d5ad95201ae4c4aa4e74de447bf9372a9d04ff5ce53f3e9d108bf7c08f1fd",
    "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 South American economic-corridor definitions, incomplete continent-wide population coverage and absent observation files."
      },
      "no_false_proxy": {
        "satisfied": true,
        "explanation": "Keeps Brazilian railways and Latin American seaports as context, not proof of economic corridors."
      },
      "scope_honesty": {
        "satisfied": true,
        "explanation": "Accurately identifies Brazil, Peru and Chile listings and limits the finding to this closed inventory."
      },
      "no_fabrication": {
        "satisfied": true,
        "explanation": "Clearly states no contours can be drawn here; four completed context/brief calls and no jobs/artifacts."
      },
      "useful_next_step": {
        "satisfied": true,
        "explanation": "Requests observation files plus a corridor layer or explicit definition, labeling the three-country option as partial rather than continent-wide."
      }
    },
    "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_map_context

    Recorded tool call · completed

  3. get_tool_help

    Recorded tool call · completed

  4. update_analysis_brief

    Recorded tool call · completed