Question: when was a charlie brown christmas first aired
[{'answer': 'December 9 , 1965', 'provenance': [{'wikipedia_id': '113226', 'title': 'A Charlie Brown Christmas', 'start_paragraph_id': 50, 'start_character': 32, 'end_paragraph_id': 50, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Reception.\n'}]}, {'provenance': [{'wikipedia_id': '113226', 'title': 'A Charlie Brown Christmas', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 621, 'bleu_score': 0.9804854598160591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3220250467204000897}, 'section': 'Section::::Abstract.'}]}]