Question: who won the first ever series of britains got talent
[{'answer': 'opera singer Paul Potts', 'provenance': [{'wikipedia_id': '17643418', 'title': "Britain's Got Talent (series 1)", 'start_paragraph_id': 2, 'start_character': 28, 'end_paragraph_id': 2, 'end_character': 51, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '17643418', 'title': "Britain's Got Talent (series 1)", 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 121, 'bleu_score': 0.9021315316859231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16618797342202531371}, 'section': 'Section::::Abstract.'}]}]