Question: when did they start putting cassette players in cars
[{'answer': '1970s', 'provenance': [{'wikipedia_id': '78427', 'title': 'Vehicle audio', 'start_paragraph_id': 10, 'start_character': 467, 'end_paragraph_id': 10, 'end_character': 472, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '78427', 'title': 'Vehicle audio', 'start_paragraph_id': 10, 'start_character': 135, 'end_paragraph_id': 10, 'end_character': 1257, 'bleu_score': 0.889461857867688, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7092069401430109962}, 'section': 'Section::::History.\n'}]}]