Question: when were potatoes first eaten in north america
[{'answer': 'in 1719', 'provenance': [{'wikipedia_id': '36801884', 'title': 'History of the potato', 'start_paragraph_id': 31, 'start_character': 199, 'end_paragraph_id': 31, 'end_character': 206, 'bleu_score': 1.0, 'section': 'Section::::History by region.:North America.\n'}]}, {'provenance': [{'wikipedia_id': '36801884', 'title': 'History of the potato', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 752, 'bleu_score': 0.9839344367380701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1902127054246296466}, 'section': 'Section::::History by region.:North America.\n'}]}]