Question: who won britain's got talent in 2013
[{'answer': 'Attraction', 'provenance': [{'wikipedia_id': '35735657', 'title': "Britain's Got Talent (series 7)", 'start_paragraph_id': 2, 'start_character': 52, 'end_paragraph_id': 2, 'end_character': 62, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]