Question: who won the second battle of fort wagner
[{'answer': 'Confederate', 'provenance': [{'wikipedia_id': '1896591', 'title': 'Second Battle of Fort Wagner', 'start_paragraph_id': 1, 'start_character': 288, 'end_paragraph_id': 1, 'end_character': 299, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]