Question: when did michael jackson's thriller come out
[{'answer': 'December 2 , 1983', 'provenance': [{'wikipedia_id': '2917280', 'title': "Michael Jackson's Thriller (music video)", 'start_paragraph_id': 29, 'start_character': 480, 'end_paragraph_id': 29, 'end_character': 497, 'bleu_score': 1.0, 'section': 'Section::::Release.\n'}]}]