Question: when did the north win the civil war
[{'answer': '1865', 'provenance': [{'wikipedia_id': '863', 'title': 'American Civil War', 'start_paragraph_id': 1, 'start_character': 108, 'end_paragraph_id': 1, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '863', 'title': 'American Civil War', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 484, 'bleu_score': 0.500059164140364, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16718271145828463540}, 'section': 'Section::::Abstract.'}]}]