Question: when opposing the thumb which muscle is active
[{'answer': 'opponens pollicis', 'provenance': [{'wikipedia_id': '46187874', 'title': 'Muscles of the thumb', 'start_paragraph_id': 12, 'start_character': 109, 'end_paragraph_id': 12, 'end_character': 126, 'bleu_score': 1.0, 'section': 'Section::::Intrinsic.\n'}]}, {'provenance': [{'wikipedia_id': '46187874', 'title': 'Muscles of the thumb', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 496, 'bleu_score': 0.976327165973018, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4990334691673239051}, 'section': 'Section::::Intrinsic.:Thenar eminence.\n'}]}]