Question: what is the purpose of a cowboy hat
[{'answer': 'insulation', 'provenance': [{'wikipedia_id': '1059971', 'title': 'Cowboy hat', 'start_paragraph_id': 4, 'start_character': 192, 'end_paragraph_id': 4, 'end_character': 202, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': 'shade', 'provenance': [{'wikipedia_id': '1059971', 'title': 'Cowboy hat', 'start_paragraph_id': 4, 'start_character': 221, 'end_paragraph_id': 4, 'end_character': 226, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '1059971', 'title': 'Cowboy hat', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 318, 'bleu_score': 0.7586120555478111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18196698004269618599}, 'section': 'Section::::History.\n'}]}]