Question: who was involved in the charge of the light brigade
[{'answer': 'Russian forces', 'provenance': [{'wikipedia_id': '18973479', 'title': 'Charge of the Light Brigade', 'start_paragraph_id': 1, 'start_character': 126, 'end_paragraph_id': 1, 'end_character': 140, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'British light cavalry led by Lord Cardigan'}, {'provenance': [{'wikipedia_id': '18973479', 'title': 'Charge of the Light Brigade', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 415, 'bleu_score': 0.7450987117990561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14059672330700636176}, 'section': 'Section::::Abstract.'}]}]