Question: how many british soldiers died in the battle of balaclava
[{'answer': '271 became casualties', 'provenance': [{'wikipedia_id': '205825', 'title': 'Battle of Balaclava', 'start_paragraph_id': 60, 'start_character': 196, 'end_paragraph_id': 60, 'end_character': 217, 'bleu_score': 1.0, 'section': 'Section::::Aftermath.\n'}]}, {'provenance': [{'wikipedia_id': '205825', 'title': 'Battle of Balaclava', 'start_paragraph_id': 60, 'start_character': 0, 'end_paragraph_id': 60, 'end_character': 850, 'bleu_score': 0.9861583350689591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5341981691933678310}, 'section': 'Section::::Aftermath.\n'}]}]