Question: how many ymcas are there in the united states
[{'answer': '2,700', 'provenance': [{'wikipedia_id': '87241', 'title': 'YMCA', 'start_paragraph_id': 63, 'start_character': 123, 'end_paragraph_id': 63, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::North America.:United States.\n'}]}, {'provenance': [{'wikipedia_id': '87241', 'title': 'YMCA', 'start_paragraph_id': 63, 'start_character': 0, 'end_paragraph_id': 63, 'end_character': 390, 'bleu_score': 0.9328730072843131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 519603970042605347}, 'section': 'Section::::North America.:United States.\n'}]}]