Question: who won the battle of fort. sumter
[{'answer': 'Confederacy', 'provenance': [{'wikipedia_id': '339819', 'title': 'Battle of Fort Sumter', 'start_paragraph_id': 4, 'start_character': 273, 'end_paragraph_id': 4, 'end_character': 284, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]