Question: what is the average heart rate of a healthy person
[{'answer': '50 and 90 bpm'}, {'provenance': [{'wikipedia_id': '304942', 'title': 'Heart rate', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 468, 'bleu_score': 0.621305032508019, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1348184629397004267}, 'section': 'Section::::Abstract.'}]}]