Question: when did america switch from tea to coffee
[{'answer': '1773', 'provenance': [{'wikipedia_id': '3516378', 'title': 'American tea culture', 'start_paragraph_id': 7, 'start_character': 120, 'end_paragraph_id': 7, 'end_character': 124, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '3516378', 'title': 'American tea culture', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 482, 'bleu_score': 0.9748377259086851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16483945892974580029}, 'section': 'Section::::History.\n'}]}]