Question: when did december 31 fall on a sunday
[{'answer': '2017', 'provenance': [{'wikipedia_id': '8204', 'title': 'December 31', 'start_paragraph_id': 121, 'start_character': 77, 'end_paragraph_id': 121, 'end_character': 81, 'bleu_score': 1.0, 'section': 'Section::::Births.\n'}]}]