Question: who won the north and south civil war
[{'answer': 'Union victory', 'provenance': [{'wikipedia_id': '863', 'title': 'American Civil War', 'start_paragraph_id': 97, 'start_character': 4, 'end_paragraph_id': 97, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Diplomacy.\n'}]}]