Question: number of hemoglobin molecules in a red blood cell
[{'answer': 'approximately 270 million', 'provenance': [{'wikipedia_id': '67158', 'title': 'Red blood cell', 'start_paragraph_id': 19, 'start_character': 129, 'end_paragraph_id': 19, 'end_character': 154, 'bleu_score': 1.0, 'section': 'Section::::Structure.:Human.\n'}]}, {'provenance': [{'wikipedia_id': '67158', 'title': 'Red blood cell', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 609, 'bleu_score': 0.9804854598160591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1995562803866332723}, 'section': 'Section::::Structure.:Human.\n'}]}]