Question: who was the winner of america's got talent 2013
[{'answer': 'Kenichi Ebina', 'provenance': [{'wikipedia_id': '36415399', 'title': "America's Got Talent (season 8)", 'start_paragraph_id': 3, 'start_character': 172, 'end_paragraph_id': 3, 'end_character': 185, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]