Question: where did the south surrendered to the north
[{'answer': 'Appomattox', 'provenance': [{'wikipedia_id': '21546927', 'title': 'Conclusion of the American Civil War', 'start_paragraph_id': 2, 'start_character': 344, 'end_paragraph_id': 2, 'end_character': 354, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21546927', 'title': 'Conclusion of the American Civil War', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 553, 'bleu_score': 0.9776501033621461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11160018157257642213}, 'section': 'Section::::Abstract.'}]}]