Question: how many horse hairs are on a violin bow
[{'answer': 'between 150 and 200 hairs', 'provenance': [{'wikipedia_id': '220213', 'title': 'Bow (music)', 'start_paragraph_id': 6, 'start_character': 33, 'end_paragraph_id': 6, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Materials and manufacture.\n'}]}, {'provenance': [{'wikipedia_id': '220213', 'title': 'Bow (music)', 'start_paragraph_id': 6, 'start_character': 18, 'end_paragraph_id': 6, 'end_character': 698, 'bleu_score': 0.8774812319746, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 459172482094561799}, 'section': 'Section::::Materials and manufacture.\n'}]}]