Question: when was the first refrigerator invented and by whom
[{'answer': 'James Harrison', 'provenance': [{'wikipedia_id': '1036259', 'title': 'Refrigerator', 'start_paragraph_id': 10, 'start_character': 72, 'end_paragraph_id': 10, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::History.:Refrigeration technology.\n'}]}, {'answer': '1851', 'provenance': [{'wikipedia_id': '1036259', 'title': 'Refrigerator', 'start_paragraph_id': 10, 'start_character': 239, 'end_paragraph_id': 10, 'end_character': 243, 'bleu_score': 1.0, 'section': 'Section::::History.:Refrigeration technology.\n'}]}, {'provenance': [{'wikipedia_id': '1036259', 'title': 'Refrigerator', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 535, 'bleu_score': 0.8836998840130921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14879361694512322099}, 'section': 'Section::::History.:Refrigeration technology.\n'}]}]