Question: when was the first texas chainsaw massacre movie made
[{'answer': '1974', 'provenance': [{'wikipedia_id': '29781', 'title': 'The Texas Chain Saw Massacre', 'start_paragraph_id': 1, 'start_character': 34, 'end_paragraph_id': 1, 'end_character': 38, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '29781', 'title': 'The Texas Chain Saw Massacre', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 722, 'bleu_score': 0.770967943039464, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7995220115812449992}, 'section': 'Section::::Abstract.'}]}]