Question: when was the fax machine invented and by whom
[{'answer': '1964', 'provenance': [{'wikipedia_id': '10826', 'title': 'Fax', 'start_paragraph_id': 17, 'start_character': 3, 'end_paragraph_id': 17, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History.:Telephone transmission.\n'}]}, {'answer': 'Xerox Corporation', 'provenance': [{'wikipedia_id': '10826', 'title': 'Fax', 'start_paragraph_id': 17, 'start_character': 9, 'end_paragraph_id': 17, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::History.:Telephone transmission.\n'}]}, {'provenance': [{'wikipedia_id': '10826', 'title': 'Fax', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 836, 'bleu_score': 0.9393149545814561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14346730150488622999}, 'section': 'Section::::History.:Telephone transmission.\n'}]}]