Question: where did the confederates surrender to the union
[{'answer': 'brick home of Wilmer McLean', 'provenance': [{'wikipedia_id': '1478485', 'title': 'Battle of Appomattox Court House', 'start_paragraph_id': 17, 'start_character': 484, 'end_paragraph_id': 17, 'end_character': 511, 'bleu_score': 1.0, 'section': 'Section::::April 9.:Battle.\n'}]}, {'answer': 'Appomattox Court House , a small village of roughly twenty buildings that served as a waystation for travelers on the Richmond - Lynchburg Stage Road'}, {'provenance': [{'wikipedia_id': '1478485', 'title': 'Battle of Appomattox Court House', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 637, 'bleu_score': 0.9812185674664711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14086409047271552921}, 'section': 'Section::::April 9.:Battle.\n'}]}]