Question: when did the movie harper valley pta come out
[{'answer': '1978', 'provenance': [{'wikipedia_id': '12799543', 'title': 'Harper Valley PTA (film)', 'start_paragraph_id': 1, 'start_character': 23, 'end_paragraph_id': 1, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12799543', 'title': 'Harper Valley PTA (film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 567, 'bleu_score': 0.853346964529974, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16012441035054614065}, 'section': 'Section::::Abstract.'}]}]