Question: how many times does a hummingbird heartbeat per minute
[{'answer': '1,260 beats per minute', 'provenance': [{'wikipedia_id': '70649', 'title': 'Hummingbird', 'start_paragraph_id': 35, 'start_character': 240, 'end_paragraph_id': 35, 'end_character': 262, 'bleu_score': 1.0, 'section': 'Section::::Specialized characteristics and metabolism.:Metabolism.\n'}]}, {'provenance': [{'wikipedia_id': '70649', 'title': 'Hummingbird', 'start_paragraph_id': 35, 'start_character': 0, 'end_paragraph_id': 35, 'end_character': 524, 'bleu_score': 0.9776501033621461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2302050826649402026}, 'section': 'Section::::Specialized characteristics and metabolism.:Metabolism.\n'}]}]