Question: who fought the confederates in the american civil war
[{'answer': 'The Union', 'provenance': [{'wikipedia_id': '863', 'title': 'American Civil War', 'start_paragraph_id': 3, 'start_character': 201, 'end_paragraph_id': 3, 'end_character': 210, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]