Research/Terra/ 806525
Task evidence / spatial-analysis

Water withdrawals in power-station countries

PassComputational taskUnpublished draft
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The question

806525
What is the average freshwater withdrawal percentage in African countries with more than 5 power stations?
Exact submitted task and declared adaptations
What is the average freshwater withdrawal percentage in African countries with more than 5 power stations?

Task conventions: Use the supplied country's CONTINENT=Africa classification, and original power-station points strictly within each original country polygon. Count source rows, regardless of operational status; no live stations. Select countries with strictly more than five stations. Use WDI ER.H2O.FWTL.ZS for 2021, the latest populated year in this frozen file: percent of internal freshwater resources. Calculate an unweighted mean of the eligible countries with nonmissing values, counting each country once. Missing values are unknown, not zero. Join country identity to WDI Country Code using matching ISO_A3; preserve country geometry and original benchmark_row_id. Maps are optional.

Some supplied power-station records lack geometry. They cannot satisfy a spatial relationship; do not assign them using a country-name guess. Disclose this coverage limitation and add unlocated_count to the final JSON: the number of original power-station records without a usable location. The requested station counts and country mean describe located records only.

Produce an inspectable contributing-country artifact including the measured station count and the 2021 withdrawal value, retaining original geometry and benchmark_row_id. End with one fenced JSON object: {count: contributing countries with a known value, unknown_count: eligible countries missing that value, coverage_note: string, selection: {collectionId, itemId, assetKey}, metrics: {mean: number}, value_field: name_of_withdrawal_column_in_selection}. Report the mean and units in prose as well.

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": "World Bank country boundaries",
    "edition": "GeoBenchX harmonized names",
    "units": {},
    "collectionId": "blue-generated--[resource id withheld]",
    "itemId": "[resource id withheld]",
    "assetKey": "data"
  },
  {
    "name": "African power stations",
    "edition": "USGS 2021 frozen compilation",
    "units": {
      "DsgAttr02": "MW"
    },
    "collectionId": "blue-generated--[resource id withheld]",
    "itemId": "[resource id withheld]",
    "assetKey": "data"
  },
  {
    "name": "Freshwater withdrawals as percent of internal resources",
    "edition": "Frozen World Development Indicators; use 2021",
    "units": {
      "2021": "percent of internal freshwater resources"
    },
    "collectionId": "blue-generated--[resource id withheld]",
    "itemId": "[resource id withheld]",
    "assetKey": "data"
  }
]

Outcome & verification

Independent artifact and delivery checks passed.

Duration
15m 0s
Recorded Blue tool calls
49
Total tokens
2,156,890
Model cost
Not recorded
Application revision
d50497ea9084f29c91b05406688f87035df98d8a
Release
terra-geobenchx-v1

Recorded final answer

The average 2021 freshwater withdrawal is **205.34% of internal freshwater resources** across **50** African countries with more than five located power stations. Important limit: this uses only station rows with usable locations; **31** original power-station records had no usable location and were excluded from the country counts. No eligible countries were missing the 2021 withdrawal value in this frozen file. Next action: open the selected contributing-country table to inspect each country’s `station_count` and `2021` value. ### Limitations - Power-station rows without usable geometry are excluded from country counts and must be reported separately as unlocated_count = 31. - 31 original power-station rows lacked usable location and were excluded from country counts. - The result follows the supplied CONTINENT = Africa classification and counts only original station points strictly contained in original country polygons.

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
50
Reported count
50
Computation verified
Yes
Answer fulfilled
Yes
Full grading and rubric record
{
  "expectedCount": 50,
  "actualCount": 50,
  "expectedMetrics": {
    "mean": 205.34461235060604
  },
  "actualMetrics": {
    "mean": 205.34461235060604
  },
  "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

Does the full Africa workflow preserve country geometry and benchmark_row_id, count only power-station rows with usable locations strictly inside each African country polygon, join the 2021 WDI withdrawal value by ISO_A3 to Country Code, and produce the country-level rows and summary counts needed for the requested mean and unlocated_count?

assess_trial · completed · assessment: sufficient

The full Africa trial preserved the supplied African country geometry and benchmark_row_id on 52 country polygons. The strict contains spatial join added station_count to every African country and produced counts from 5 to 349, so the >5 filter selected 50 eligible countries. The nearest-distance summary counted 3,034 original station rows in total and 3,003 rows with usable locations, so unlocated_count is 31. The ISO_A3 to Country Code left join matched all 50 eligible countries, the copied 2021 field was populated for all 50 eligible countries, and the eligible-country summary produced mean_2021 = 205.34461235060604 with known_countries = 50 and eligible_countries = 50.

assess_result · completed · assessment: sufficient

The published contributing-country artifact contains 50 African country polygons with original geometry, benchmark_row_id, station_count, and the joined 2021 freshwater-withdrawal value. The published summary table reports mean_2021 = 205.34461235060604 with known_countries = 50 and eligible_countries = 50, so the requested unweighted mean is based on 50 contributing countries and unknown_count = 0. The published station-location summary reports total_rows = 3034 and located_rows = 3003, so unlocated_count = 31. This uses the supplied Blue-hosted benchmark fixtures for GeoBenchX World Bank country boundaries, the USGS 2021 frozen African power-station compilation, and the frozen World Bank WDI ER.H2O.FWTL.ZS 2021 table, retrieved in this run on 2026-10-07.

Recorded workflow

  1. 01

    African countries

    Recorded vector-filter · succeeded

  2. 02

    Contributing countries

    Recorded vector-filter · succeeded

  3. 03

    World Bank country boundaries

    Recorded source · succeeded

  4. 04

    Country station counts

    Recorded vector-spatial-join · succeeded

  5. 05

    Contributing countries with 2021 withdrawal

    Recorded output · succeeded

  6. 06

    Eligible-country summary

    Recorded output · succeeded

  7. 07

    Station location summary

    Recorded output · succeeded

  8. 08

    Eligible countries

    Recorded vector-filter · succeeded

  9. 09

    Eligible country summary

    Recorded table-group-statistics · succeeded

  10. 10

    Eligible countries with WDI

    Recorded table-attribute-join · succeeded

  11. 11

    Station location check

    Recorded vector-nearest-distance · succeeded

  12. 12

    Station location summary

    Recorded table-group-statistics · succeeded

  13. 13

    African power stations

    Recorded source · succeeded

  14. 14

    WDI freshwater withdrawal

    Recorded source · succeeded

  15. 15

    African countries

    Recorded vector-filter · succeeded

  16. 16

    Contributing countries

    Recorded vector-filter · succeeded

  17. 17

    World Bank country boundaries

    Recorded source · succeeded

  18. 18

    Country station counts

    Recorded vector-spatial-join · succeeded

  19. 19

    Eligible countries

    Recorded vector-filter · succeeded

  20. 20

    Eligible country summary

    Recorded table-group-statistics · succeeded

  21. 21

    Eligible countries with WDI

    Recorded table-attribute-join · succeeded

  22. 22

    Station location check

    Recorded vector-nearest-distance · succeeded

  23. 23

    Station location summary

    Recorded table-group-statistics · succeeded

  24. 24

    African power stations

    Recorded source · succeeded

  25. 25

    African countries

    Recorded output · succeeded

  26. 26

    Country station counts

    Recorded output · succeeded

  27. 27

    Eligible countries with WDI

    Recorded output · succeeded

  28. 28

    Contributing countries

    Recorded output · succeeded

  29. 29

    Eligible country summary

    Recorded output · succeeded

  30. 30

    Station location summary

    Recorded output · succeeded

  31. 31

    WDI freshwater withdrawal

    Recorded source · 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 check the saved analysis context, inspect the supplied datasets, and test the smallest reliable join/count method before I prepare the final contributing-country table.

  2. get_collection

    Recorded tool call · completed

  3. get_collection

    Recorded tool call · completed

  4. get_collection

    Recorded tool call · completed

  5. get_analysis

    Recorded tool call · completed

  6. Progress update

    I found the three supplied inputs. Next I’m sampling their actual fields so I can build the count-and-join method with the original IDs and 2021 value column, not guesses.

  7. get_collection

    Recorded tool call · completed

  8. get_collection

    Recorded tool call · completed

  9. get_collection

    Recorded tool call · completed

  10. get_tool_help

    Recorded tool call · completed

  11. list_processors

    Recorded tool call · completed

  12. get_tool_help

    Recorded tool call · completed

  13. Progress update

    I confirmed the supplied inputs are the right frozen country, power-station, and WDI files. The remaining uncertainty is practical: which processors and field names will reliably keep the original country geometry and benchmark IDs through the count-and-join steps.

  14. get_tool_help

    Recorded tool call · completed

  15. describe_processors

    Recorded tool call · completed

  16. describe_processors

    Recorded tool call · completed

  17. describe_processors

    Recorded tool call · completed

  18. describe_processors

    Recorded tool call · completed

  19. describe_processors

    Recorded tool call · completed

  20. describe_processors

    Recorded tool call · completed

  21. Progress update

    I’ve got the main processor candidates. Next I’m checking their exact behavior so the final country file keeps polygon geometry, counts only strictly inside station points, and joins WDI by ISO_A3 to Country Code without dropping unmatched countries silently.

  22. update_analysis_brief

    Recorded tool call · completed

  23. list_processors

    Recorded tool call · completed

  24. describe_processors

    Recorded tool call · completed

  25. describe_processors

    Recorded tool call · completed

  26. Progress update

    I’ve settled the method: one branch counts located stations by strict country containment, a second branch counts unlocated station rows from null nearest-distance values, and the WDI table joins by ISO_A3 to Country Code before the final mean is summarized. I’m running that full-area private test now so I can inspect the exact fields and counts before saving the final workflow.

  27. run_trial

    Recorded tool call · completed

  28. Progress update

    The private full-area test worked. It found 52 supplied African countries, 3,034 total power-station rows, 3,003 rows with usable locations, 50 countries with more than five strictly contained stations, and a 2021 mean of 205.3446% across 50 countries with known values. Next I’m saving that tested method as the final workflow and then I’ll inspect the published outputs before I give you the result.

  29. assess_trial

    Recorded tool call · completed

  30. Progress update

    The method is now tested end to end. I’m saving the exact tested computation as the final workflow, with the contributing-country table as the main output and the count summaries as supporting outputs, so I can inspect the published artifacts before I lock the answer.

  31. get_tool_help

    Recorded tool call · completed

  32. get_analysis

    Recorded tool call · completed

  33. get_tool_help

    Recorded tool call · completed

  34. get_tool_help

    Recorded tool call · completed

  35. get_tool_help

    Recorded tool call · completed

  36. get_tool_help

    Recorded tool call · completed

  37. get_tool_help

    Recorded tool call · completed

  38. update_analysis_brief

    Recorded tool call · completed

  39. get_tool_help

    Recorded tool call · completed

  40. get_tool_help

    Recorded tool call · completed

  41. propose_workflow

    Recorded tool call · completed

  42. execute_workflow

    Recorded tool call · completed

  43. Progress update

    The checked method is now saved as a ready workflow. I’m running that exact version so I can inspect the published contributing-country artifact, confirm the summary tables, and attach the final machine-readable answer to the assessed result.

  44. Progress update

    The final workflow finished in the background. I’m checking the published outputs now so I can attach the exact contributing-country artifact and the machine-readable answer to the assessed result.

  45. inspect_workflow_results

    Recorded tool call · completed

  46. inspect_artifact

    Recorded tool call · completed

  47. inspect_artifact

    Recorded tool call · completed

  48. get_tool_help

    Recorded tool call · completed

  49. Progress update

    The background inspections completed. I’m reopening the final country table and the two summary outputs now, then I’ll record the final assessed answer with the selected artifact IDs and the mean.

  50. get_tool_help

    Recorded tool call · completed

  51. inspect_artifact

    Recorded tool call · completed

  52. inspect_workflow_results

    Recorded tool call · completed

  53. inspect_artifact

    Recorded tool call · completed

  54. inspect_artifact

    Recorded tool call · completed

  55. inspect_artifact

    Recorded tool call · completed

  56. Progress update

    I’ve confirmed the final workflow outputs exist. I’m inspecting the published final country table and the published mean summary one more time so the final assessment points to the exact delivered artifacts, not just the matching trial copies.

  57. Progress update

    The final output inspections are finishing in the background. I’m reopening the published country table and published mean summary now, then I’ll record the final assessed answer with the selected artifact IDs and the confirmed mean.

  58. inspect_artifact

    Recorded tool call · completed

  59. inspect_artifact

    Recorded tool call · completed

  60. Progress update

    I’ve confirmed the published country table, the published mean summary, and the published location summary. I’m refreshing the brief notes from those verified outputs, then I’ll attach the final selected answer object and give you the short answer in plain language.

  61. update_analysis_brief

    Recorded tool call · completed

  62. assess_result

    Recorded tool call · completed

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