Question: who won america's got talent season 7
[{'answer': 'Olate Dogs', 'provenance': [{'wikipedia_id': '34072793', 'title': "America's Got Talent (season 7)", 'start_paragraph_id': 1, 'start_character': 534, 'end_paragraph_id': 1, 'end_character': 544, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]