Question: how many retail pharmacies are there in the us
[{'answer': 'about 28,000', 'provenance': [{'wikipedia_id': '29934577', 'title': 'Pharmacies in the United States', 'start_paragraph_id': 1, 'start_character': 378, 'end_paragraph_id': 1, 'end_character': 390, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '29934577', 'title': 'Pharmacies in the United States', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 618, 'bleu_score': 0.9776501033621461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9105830941747056438}, 'section': 'Section::::Abstract.'}]}]