Question: when did the tv show the waltons first air
[{'answer': 'September 1972', 'provenance': [{'wikipedia_id': '87678', 'title': 'The Waltons', 'start_paragraph_id': 2, 'start_character': 266, 'end_paragraph_id': 2, 'end_character': 280, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'September 14 , 1972 ( 1972 - 09 - 14 )'}, {'provenance': [{'wikipedia_id': '87678', 'title': 'The Waltons', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 599, 'bleu_score': 0.979054689945215, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7363662525217929683}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '87678', 'title': 'The Waltons', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['Based on its success, the CBS television network ordered one season of episodes based on the same characters and that became the television series "The Waltons". Beginning in September 1972, the series subsequently aired on CBS for nine seasons.', '. Beginning in September 1972, the series subsequently aired on CBS for nine seasons', 'The Waltons". Beginning in September 1972,']}}]}]