Where was the Confederates last stand just before they surrendered?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q8676', 'id': 0, 'label': 'American Civil War'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q1125021', 'id': 1, 'label': 'Confederate States Army'}, {'type': 'INTERNAL', 'name_': 'Q1355391', 'id': 2, 'label': 'Battle of Appomattox Court House'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q4744652', 'id': 3, 'label': 'Appomattox Court House National Historical Park'}], 'links': [{'name_': 'P607', 'source': 1, 'target': 0, 'label': 'conflict'}, {'name_': 'P361', 'source': 2, 'target': 0, 'label': 'part of'}, {'name_': 'P276', 'source': 2, 'target': 3, 'label': 'location'}]}