Question: who won the 2017 mayoral election in nyc
[{'answer': 'Bill de Blasio', 'provenance': [{'wikipedia_id': '47604581', 'title': '2017 New York City mayoral election', 'start_paragraph_id': 1, 'start_character': 88, 'end_paragraph_id': 1, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47604581', 'title': '2017 New York City mayoral election', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 134, 'bleu_score': 0.6943776929402701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 497433235168460944}, 'section': 'Section::::Abstract.'}]}]