Question: where did the confederacy surrender to the union
[{'answer': 'Appomattox Court House', 'provenance': [{'wikipedia_id': '1431266', 'title': 'Turning point of the American Civil War', 'start_paragraph_id': 23, 'start_character': 695, 'end_paragraph_id': 23, 'end_character': 717, 'bleu_score': 1.0, 'section': 'Section::::Union capture of Vicksburg and victory at Gettysburg (July 1863).\n'}]}, {'provenance': [{'wikipedia_id': '1431266', 'title': 'Turning point of the American Civil War', 'start_paragraph_id': 23, 'start_character': 0, 'end_paragraph_id': 23, 'end_character': 755, 'bleu_score': 0.596312846733423, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18189694513368093834}, 'section': 'Section::::Union capture of Vicksburg and victory at Gettysburg (July 1863).\n'}]}]