Question: when did the first answering machine come out
[{'answer': '1949', 'provenance': [{'wikipedia_id': '254857', 'title': 'Answering machine', 'start_paragraph_id': 6, 'start_character': 82, 'end_paragraph_id': 6, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '254857', 'title': 'Answering machine', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 218, 'bleu_score': 0.9451524926983921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5423816932011274695}, 'section': 'Section::::History.\n'}]}]