Question: who won the battle of britain in ww2
[{'answer': 'Britain', 'provenance': [{'wikipedia_id': '57974', 'title': 'Battle of Britain', 'start_paragraph_id': 0, 'start_character': 10, 'end_paragraph_id': 0, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'British'}, {'answer': 'the United Kingdom'}, {'provenance': [{'wikipedia_id': '57974', 'title': 'Battle of Britain', 'start_paragraph_id': 205, 'start_character': 0, 'end_paragraph_id': 205, 'end_character': 447, 'bleu_score': 0.5667089677068681, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11702297073801564429}, 'section': 'Section::::Aftermath.\n'}]}, {'provenance': [{'wikipedia_id': '57974', 'title': 'Battle of Britain', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 471, 'bleu_score': 0.861758988103777, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11702297073801564429}, 'section': 'Section::::Abstract.'}]}, {}, {'provenance': [{'wikipedia_id': '8648350', 'title': 'The Battle of Britain', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The Battle of Britain was the fourth of Frank Capra\'s "Why We Fight" series of seven propaganda films, which made the case for fighting and winning the Second World War', 'Britain']}}]}]