Question: what bones produce red blood cells in adults
[{'answer': 'bone marrow', 'provenance': [{'wikipedia_id': '196130', 'title': 'Bone marrow', 'start_paragraph_id': 1, 'start_character': 127, 'end_paragraph_id': 1, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '196130', 'title': 'Bone marrow', 'start_paragraph_id': 39, 'start_character': 0, 'end_paragraph_id': 39, 'end_character': 671, 'bleu_score': 0.9813933169956551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5629981570669209033}, 'section': 'Section::::Clinical significance.:Histology.\n'}]}]