Question: when did the civil war start in american
[{'answer': 'April 1861', 'provenance': [{'wikipedia_id': '863', 'title': 'American Civil War', 'start_paragraph_id': 1, 'start_character': 359, 'end_paragraph_id': 1, 'end_character': 369, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '863', 'title': 'American Civil War', 'start_paragraph_id': 1, 'start_character': 95, 'end_paragraph_id': 1, 'end_character': 790, 'bleu_score': 0.670876256781281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 905244078375840537}, 'section': 'Section::::Abstract.'}]}]