Question: when did the first rotary phone come out
[{'answer': 'ca . 1904', 'provenance': [{'wikipedia_id': '25960', 'title': 'Rotary dial', 'start_paragraph_id': 4, 'start_character': 180, 'end_paragraph_id': 4, 'end_character': 189, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25960', 'title': 'Rotary dial', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 402, 'bleu_score': 0.909930230187989, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14009804167858470537}, 'section': 'Section::::Abstract.'}]}]