Question: who won australia's got talent 2011 winner
[{'answer': 'Jack Vidgen', 'provenance': [{'wikipedia_id': '31995797', 'title': "Australia's Got Talent (season 5)", 'start_paragraph_id': 1, 'start_character': 230, 'end_paragraph_id': 1, 'end_character': 241, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31995797', 'title': "Australia's Got Talent (season 5)", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 452, 'bleu_score': 0.9738505480425671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7264223134352944635}, 'section': 'Section::::Abstract.'}]}]