Q15, run 2026-11-04-1738-sonnet-query

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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-

✅ D1 sql run 1 graded by code · query session

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

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

✅ D1 sql run 2 graded by code · query session

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

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

✅ D1 sql run 3 graded by code · query session

A-. Halden Bank (E10) was cut to BBB+ only on 2026-04-15 (A27).

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

✅ D1 sql run 4 graded by code · query session

A-. The downgrade A27 only came on 2026-04-15.

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

✅ D1 sql run 5 graded by code · query session

A-. E10's downgrade, A27, was not until 2026-04-15.

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

✅ D2 sql+markdown run 1 graded by code · query session

A-. E10 was downgraded to BBB+ only on 2026-04-15 (A27). E17 is the same LEI.

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

✅ D2 sql+markdown run 2 graded by code · query session

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

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

✅ D2 sql+markdown run 3 graded by code · query session

A-. E10's downgrade to BBB+ (A27) came on 2026-04-15, after 1 January 2026.

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

✅ D2 sql+markdown run 4 graded by code · query session

A-. E10's downgrade to BBB+ (A27) is dated 2026-04-15, after that date.

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

✅ D2 sql+markdown run 5 graded by code · query session

A-. Halden Bank (E10) was downgraded to BBB+ only on 2026-04-15 (A27).

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

✅ D4 sparql run 1 graded by code · query session

A-. Halden Bank (E10) was rated A- (A26) until the downgrade on 2026-04-15 (A27).

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

✅ D4 sparql run 2 graded by code · query session

A-. Halden Bank (E10) was cut to BBB+ only on 2026-04-15 (A27).

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

✅ D4 sparql run 3 graded by code · query session

A-. E10 held A- from A26 until the downgrade on 2026-04-15. E17 is only a duplicate record of E10.

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

✅ D4 sparql run 4 graded by code · query session

A-. E10 was A- (A26) until the downgrade to BBB+ on 2026-04-15 (A27). E17 is a duplicate record of E10 and has no ratings.

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

✅ D4 sparql run 5 graded by code · query session

A-. E10 was A- (A26) until the downgrade to BBB+ on 2026-04-15 (A27). E17 is a research duplicate of E10, since it shares E10's LEI.

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

✅ D5 sparql+ontology run 1 graded by code · query session

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

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

✅ D5 sparql+ontology run 2 graded by code · query session

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

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

✅ D5 sparql+ontology run 3 graded by code · query session

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

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

✅ D5 sparql+ontology run 4 graded by code · query session

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

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

✅ D5 sparql+ontology run 5 graded by code · query session

A-. A26 was in force until the downgrade A27 on 2026-04-15.

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