Question: who was defeated in the battle of guadalcanal
[{'answer': 'Japan', 'provenance': [{'wikipedia_id': '405411', 'title': 'Naval Battle of Guadalcanal', 'start_paragraph_id': 1, 'start_character': 169, 'end_paragraph_id': 1, 'end_character': 174, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]