Question: who was the winner for american got talent
[{'answer': 'Darci Lynne Farmer', 'provenance': [{'wikipedia_id': '4829129', 'title': "America's Got Talent", 'start_paragraph_id': 65, 'start_character': 178, 'end_paragraph_id': 65, 'end_character': 196, 'bleu_score': 1.0, 'section': 'Section::::Season synopses.:Season 12 (2017).\n'}]}]