Question: when did the first bag phones come out
[{'answer': '1990', 'provenance': [{'wikipedia_id': '13993425', 'title': 'Motorola Bag Phone', 'start_paragraph_id': 4, 'start_character': 561, 'end_paragraph_id': 4, 'end_character': 565, 'bleu_score': 1.0, 'section': 'Section::::Description.\n'}]}, {'provenance': [{'wikipedia_id': '13993425', 'title': 'Motorola Bag Phone', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 151, 'bleu_score': 0.823721118638952, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 73744204506835145}, 'section': 'Section::::Abstract.'}]}]