Q40, run 2026-11-04-2053-sonnet

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Which source is in the highest tier?

Tests: Local code: K3 is the highest tier, not K1.

Expected: source = S01

✅ R1 csv run 1 graded by code

S01 (K3), under the same assumption.

JSON: {"source": "S01"}

❌ R1 csv run 2 graded by code

S04. This is only valid if K0 is the top tier. The data does not state the ordering.

JSON: {"source": "S04"}

Why: source: expected S01, got S04

❌ R1 csv run 3 graded by code

Ambiguous, so I give no ID. It is either S01 (K3) or S04 (K0).

JSON: {"source": null}

Why: source: expected S01, got None

✅ R1 csv run 4 graded by code

The data does not define tier direction. If K3 is highest, the answer is S01.

JSON: {"source": "S01"}

✅ R1 csv run 5 graded by code

S01. The tier order is not defined, so I assumed K3 is the highest.

JSON: {"source": "S01"}

✅ R10 executed run 1 graded by code

S01, which has tier_rank 1.

JSON: {"source": "S01"}

✅ R10 executed run 2 graded by code

S01 (tier K3, rank 1).

JSON: {"source": "S01"}

✅ R10 executed run 3 graded by code

S01, which has tier_rank 1.

JSON: {"source": "S01"}

✅ R10 executed run 4 graded by code

S01.

JSON: {"source": "S01"}

✅ R10 executed run 5 graded by code

S01 (K3, rank 1).

JSON: {"source": "S01"}