{"reviews":[{"answer_id":"a001","verdict":"uncertain","rationale":"The references provide F1 scores, but the supplied source text refers to result tables without including their values. The source therefore does not establish the absolute scores needed to verify or refute the answer.","source_span_ids":["s00101","s00104"],"issues":[{"type":"source_ambiguity","claim":"The references give absolute F1 scores, but the supplied source does not include the referenced tables containing those results.","answer_quote":"unanswerable","source_span_ids":["s00101","s00104"]}]}]}