Question: when did dick clark's new year's eve start
[{'answer': 'December 31 , 1972', 'provenance': [{'wikipedia_id': '2031406', 'title': "Dick Clark's New Year's Rockin' Eve", 'start_paragraph_id': 15, 'start_character': 645, 'end_paragraph_id': 15, 'end_character': 666, 'bleu_score': 1.0, 'section': 'Section::::History.:Conception, premiere.\n'}]}]