Question: when did air conditioning get put in cars
[{'answer': '1939', 'provenance': [{'wikipedia_id': '33916504', 'title': 'Automobile air conditioning', 'start_paragraph_id': 4, 'start_character': 3, 'end_paragraph_id': 4, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '33916504', 'title': 'Automobile air conditioning', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 500, 'bleu_score': 0.9748377259086851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12817452701390621492}, 'section': 'Section::::History.\n'}]}]