Which civilization contained the ancient city of Memphis?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q19180675', 'id': 0, 'label': 'Small Brockhaus and Efron Encyclopedic Dictionary'}, {'type': 'INTERNAL', 'name_': 'Q6173448', 'id': 1, 'label': 'Wikipedia:Vital articles/Level/4'}, {'type': 'INTERNAL', 'name_': 'Q19652', 'id': 2, 'label': 'public domain'}, {'type': 'INTERNAL', 'name_': 'Q6506', 'id': 3, 'label': 'Varna'}, {'type': 'INTERNAL', 'name_': 'Q205740', 'id': 4, 'label': 'Egyptian mythology'}, {'type': 'INTERNAL', 'name_': 'Q146083', 'id': 5, 'label': 'Ancient Egyptian deity'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q16563', 'id': 6, 'label': 'Memphis'}, {'type': 'INTERNAL', 'name_': 'Q303', 'id': 7, 'label': 'Elvis Presley'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q56202338', 'id': 8, 'label': 'Ancient Egyptians'}, {'type': 'INTERNAL', 'name_': 'Q645882', 'id': 9, 'label': 'Pyramid Texts'}], 'links': [{'name_': 'P6216', 'source': 0, 'target': 2, 'label': 'copyright status'}, {'name_': 'P1343', 'source': 3, 'target': 0, 'label': 'described by source'}, {'name_': 'P190', 'source': 3, 'target': 6, 'label': 'twinned administrative body'}, {'name_': 'P5008', 'source': 4, 'target': 1, 'label': 'on focus list of Wikimedia project'}, {'name_': 'P361', 'source': 5, 'target': 4, 'label': 'part of'}, {'name_': 'P1049', 'source': 5, 'target': 8, 'label': 'worshipped by'}, {'name_': 'P5008', 'source': 7, 'target': 1, 'label': 'on focus list of Wikimedia project'}, {'name_': 'P20', 'source': 7, 'target': 6, 'label': 'place of death'}, {'name_': 'P6216', 'source': 9, 'target': 2, 'label': 'copyright status'}, {'name_': 'P2596', 'source': 9, 'target': 8, 'label': 'culture'}]}