The user asks to retrieve deduction_cap from the supplied rulebook. But R8 says retrieval tasks have a supplied payroll month. The prompt doesn't specify payroll_month... Let me check the documents first.

Actually, the task says "Retrieve deduction_cap from the supplied rulebook." There may be documents with payroll_month. Let me list documents.

Wait, but "deduction_cap" is the selected deduction cap from the reference row, which depends on the month. There's no month given. Hmm. But retrieval tasks must have a month covered by a reference row. Let me look at documents.

Read the payroll document to find payroll_month.

payroll_month = 2026-06 → first-half row (months 2026-01 to 2026-06). deduction = 400.00.

Retrieval task: field deduction_cap, value "400.00". Clauses: cite R1 (selecting) and R4 (source of deduction cap).

No gross_pay given — but retrieval tasks only ask for one named value. R8 says retrieval tasks must have a month covered by a reference row. Fine.

Return JSON with decision "retrieve", field "deduction_cap", value "400.00", clauses ["R1","R4"].

The task: "Retrieve deduction_cap from the supplied rulebook." There's no payroll month given. Need to list documents to see case inputs.

R8 requires a month covered by a reference row. If missing payroll month... retrieval tasks must have a month; malformed retrieval tasks are dataset errors. But maybe the document supplies payroll_month. Let's list documents.

Read the document.

The payroll month is 2026-06, which is first-half. We need deduction_cap from reference. Use lookup_reference first-half.

But wait — the task says "Retrieve deduction_cap from the supplied rulebook." The reference schedule may be case-specific. Use lookup_reference.

Deduction cap for 2026-06 = 400.00. Clauses: R1 and R4 (per R8: cite R1 and the source rule R4).

The task says "Retrieve deduction_cap from the supplied rulebook." But R8 requires a payroll month. Retrieval tasks must have a month covered by a reference row. Hmm — but there's no payroll month given in the prompt. However, the instructions say "Retrieve the case inputs with list_documents and read_document." Let me look at documents first.

Also "deduction_cap" from "the supplied rulebook" — but reference rows are available only through lookup_reference. Let me gather documents.

Both rows have deduction 400.00. Read the payroll document to get the payroll month.

Payroll month 2026-06 → first-half row. deduction_cap = 400.00.

Retrieve answer: field "deduction_cap", value "400.00", clauses ["R1","R4"].