Q15, run 2026-11-04-1711-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-. E17 shares E10's LEI, and A26 gave A- until the downgrade in A27 on 2026-04-15.

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

✅ R1 csv run 2 graded by code

A-. E10 was rated A- in A26, and E17 is the same entity by LEI. The downgrade in A27 came in April 2026.

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

✅ R1 csv run 3 graded by code

A-. E10 and E17 share an LEI and are the same entity. A26 gave A-, and the downgrade (A27) came only on 2026-04-15.

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

✅ R1 csv run 4 graded by code

A-. A26 stood until the downgrade A27 on 2026-04-15, and E17 is the same entity as E10.

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

✅ R1 csv run 5 graded by code

A-. E17 is the same entity as E10 (same LEI), and A26's A- stood until A27 in April 2026.

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

✅ R2 rdf run 1 graded by code

A-. E10 was assigned A- on 2023-05-01 (A26) and downgraded on 2026-04-15 (A27). E17 shares its LEI but has no ratings.

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

✅ R2 rdf run 2 graded by code

A-. This is E10 (A26), and its downgrade A27 came in April 2026. E17 is a duplicate record with the same LEI and no ratings.

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

✅ R2 rdf run 3 graded by code

A-. A26 assigned A- to E10, and the downgrade A27 only came on 2026-04-15. E17 is a duplicate of E10.

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

✅ R2 rdf run 4 graded by code

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

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

✅ R2 rdf run 5 graded by code

A-. E10 has been rated A- since A26 (2023-05-01). The downgrade to BBB+ (A27) came in April 2026. E17 shares E10's LEI and has no ratings.

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

✅ R6 rdf+ontology run 1 graded by code

A-. E10 held A- from A26 until the downgrade A27 on 2026-04-15.

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

✅ R6 rdf+ontology run 2 graded by code

A-. E17 and E10 share an LEI, so they are the same entity. E10 was rated A- (A26) until the downgrade on 2026-04-15 (A27).

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

✅ R6 rdf+ontology run 3 graded by code

A-. E10's rating was A- (A26) until the downgrade A27 on 2026-04-15.

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

✅ R6 rdf+ontology run 4 graded by code

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

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

✅ R6 rdf+ontology run 5 graded by code

A-. E10 held A- from A26 until the downgrade in A27 on 2026-04-15.

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

✅ R5 csv+ontology run 1 graded by code

A-. E17 is the same entity as E10 (same LEI). A26 set A- and the downgrade A27 was not until 2026-04-15.

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

✅ R5 csv+ontology run 2 graded by code

A-. E17 shares E10's LEI, so it is the same entity. A26 set A-, and the downgrade A27 came later, on 2026-04-15.

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

✅ R5 csv+ontology run 3 graded by code

A-. A26 set A- for Halden Bank (E10), and the downgrade in A27 is not until 2026-04-15.

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

✅ R5 csv+ontology run 4 graded by code

A-. E10 was assigned A- by A26 and was not downgraded until 2026-04-15 (A27).

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

✅ R5 csv+ontology run 5 graded by code

A-. This is E10 (E17 is the same entity), assigned in A26, with the downgrade in A27 not until April 2026.

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

✅ R4 csv+markdown run 1 graded by code

A-. A26 holds until the downgrade A27 on 2026-04-15, and E17 is the same entity.

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

✅ R4 csv+markdown run 2 graded by code

A-. A26 (2023) set A- for E10, and the downgrade A27 came on 2026-04-15.

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

✅ R4 csv+markdown run 3 graded by code

A-. A26 set E10 at A- in 2023, and the downgrade A27 came only on 2026-04-15.

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

✅ R4 csv+markdown run 4 graded by code

A-. E10's rating was A- from A26 until the downgrade A27 on 2026-04-15.

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

✅ R4 csv+markdown run 5 graded by code

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

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

✅ R3 csv+padding run 1 graded by code

A-. E10 was rated A- from A26 and downgraded only on 2026-04-15 (A27).

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

✅ R3 csv+padding run 2 graded by code

A-. E10 was assigned A- (A26) and not downgraded until 2026-04-15 (A27).

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

✅ R3 csv+padding run 3 graded by code

A-. This is E10's rating from A26, before the A27 downgrade on 2026-04-15. E17 is a duplicate of E10 (same LEI).

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

✅ R3 csv+padding run 4 graded by code

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

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

✅ R3 csv+padding run 5 graded by code

A-. E10 was assigned A- (A26) and not downgraded until 2026-04-15 (A27). E17 is the same LEI.

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