Q15, run 2026-11-04-2022-sonnet

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What was Halden Bank's rating on 1 January 2026?

Tests: Time: the downgrade came later in 2026.

Expected: rating = A-

✅ R1 csv run 1 graded by code

A-. Halden Bank (E10; E17 is a duplicate record) held A- (A26) until the downgrade on 2026-04-15 (A27).

JSON: {"rating": "A-"}

✅ R1 csv run 2 graded by code

A-. E10's rating was A- from A26 until A27 downgraded it on 2026-04-15. E17 is a RESEARCH duplicate with no actions.

JSON: {"rating": "A-"}

✅ R1 csv run 3 graded by code

A-. E10 was A- (A26) until A27 on 2026-04-15, and E17 is a duplicate record with no actions.

JSON: {"rating": "A-"}

✅ R1 csv run 4 graded by code

A-. E10 was rated A- from 2023 (A26) until its downgrade to BBB+ on 2026-04-15 (A27).

JSON: {"rating": "A-"}

✅ R1 csv run 5 graded by code

A-. A26 assigned it in 2023, and the downgrade A27 only came on 2026-04-15. E17 is a duplicate with no ratings.

JSON: {"rating": "A-"}

✅ R4 csv+markdown run 1 graded by code

A-. E17 is E10's duplicate (same LEI), and A26 held A- until A27 on 2026-04-15.

JSON: {"rating": "A-"}

✅ R4 csv+markdown run 2 graded by code

A-. E10 and E17 share an LEI, and A27 (the downgrade to BBB+) is dated 2026-04-15.

JSON: {"rating": "A-"}

✅ R4 csv+markdown run 3 graded by code

A-. E10 and E17 share an LEI, and the downgrade to BBB+ came only on 2026-04-15 (A27).

JSON: {"rating": "A-"}

✅ R4 csv+markdown run 4 graded by code

A-. E10 was assigned A- (A26), and the downgrade to BBB+ is dated 2026-04-15 (A27).

JSON: {"rating": "A-"}

✅ R4 csv+markdown run 5 graded by code

A-. E10 was assigned A- in A26, and the downgrade A27 only came on 2026-04-15. E17 is the same entity as E10 and has no actions of its own.

JSON: {"rating": "A-"}

✅ R10 executed run 1 graded by code

A-. E10 was A- until 2026-04-15 (A26); E10 also covers merged record E17.

JSON: {"rating": "A-"}

✅ R10 executed run 2 graded by code

A-. E10 held A- until 2026-04-15 (A26).

JSON: {"rating": "A-"}

✅ R10 executed run 3 graded by code

A-. A26 (A-) held until 2026-04-15.

JSON: {"rating": "A-"}

✅ R10 executed run 4 graded by code

A-. E10 was A- until 2026-04-15 (A26).

JSON: {"rating": "A-"}

✅ R10 executed run 5 graded by code

A- (A26, to 2026-04-15). E10 merges E17.

JSON: {"rating": "A-"}

✅ R8 csv+axioms run 1 graded by code

A-. E17 is the same entity as E10, and A26 (A-) held until A27 on 2026-04-15.

JSON: {"rating": "A-"}

✅ R8 csv+axioms run 2 graded by code

A-. E10 was assigned A- (A26) and not downgraded until 2026-04-15 (A27). E17 has the same LEI and no actions.

JSON: {"rating": "A-"}

✅ R8 csv+axioms run 3 graded by code

A-. E10 and E17 share a LEI, and A26 (A-) held until A27 (2026-04-15).

JSON: {"rating": "A-"}

✅ R8 csv+axioms run 4 graded by code

A-. A26 assigned it in 2023 and A27 did not downgrade it until 2026-04-15. E17 is the same entity as E10.

JSON: {"rating": "A-"}

✅ R8 csv+axioms run 5 graded by code

A-. A26 assigned it, and A27's downgrade came only on 2026-04-15.

JSON: {"rating": "A-"}