Question: who wins the great british baking show 2015
[{'answer': 'Nadiya Hussain', 'provenance': [{'wikipedia_id': '47366090', 'title': 'The Great British Bake Off (series 6)', 'start_paragraph_id': 1, 'start_character': 358, 'end_paragraph_id': 1, 'end_character': 372, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '47366090', 'title': 'The Great British Bake Off (series 6)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 428, 'bleu_score': 0.9062950209722, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11261777547643505995}, 'section': 'Section::::Abstract.'}]}]