Question: who won the mayoral race in san antonio
[{'answer': 'Ron Nirenberg', 'provenance': [{'wikipedia_id': '52820436', 'title': '2017 San Antonio mayoral election', 'start_paragraph_id': 1, 'start_character': 231, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]