Question: who won the first series of the voice uk
[{'answer': 'Leanne Mitchell', 'provenance': [{'wikipedia_id': '35067617', 'title': 'The Voice UK (series 1)', 'start_paragraph_id': 1, 'start_character': 246, 'end_paragraph_id': 1, 'end_character': 261, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '35067617', 'title': 'The Voice UK (series 1)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 289, 'bleu_score': 0.916705652864192, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2685321821101069828}, 'section': 'Section::::Abstract.'}]}]