Question: who won great british bake off season 4
[{'answer': 'Frances Quinn', 'provenance': [{'wikipedia_id': '40211950', 'title': 'The Great British Bake Off (series 4)', 'start_paragraph_id': 3, 'start_character': 50, 'end_paragraph_id': 3, 'end_character': 63, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40211950', 'title': 'The Great British Bake Off (series 4)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 63, 'bleu_score': 0.8385766789076251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14973898538029453207}, 'section': 'Section::::Abstract.'}]}]