Who was both the king of the Franks and emperor of the Romans?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q19180675', 'id': 0, 'label': 'Small Brockhaus and Efron Encyclopedic Dictionary'}, {'type': 'INTERNAL', 'name_': 'Q30', 'id': 1, 'label': 'United States of America'}, {'type': 'INTERNAL', 'name_': 'Q6581097', 'id': 2, 'label': 'male'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q1747689', 'id': 3, 'label': 'Ancient Rome'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q43482', 'id': 4, 'label': 'Franks'}, {'type': 'INTERNAL', 'name_': 'Q3044', 'id': 5, 'label': 'Charlemagne'}, {'type': 'INTERNAL', 'name_': 'Q1491473', 'id': 6, 'label': 'Gaius Julius Caesar Strabo Vopiscus'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q18287233', 'id': 7, 'label': 'Roma'}, {'type': 'INTERNAL', 'name_': 'Q7361461', 'id': 8, 'label': 'Roma!'}], 'links': [{'name_': 'P1343', 'source': 1, 'target': 0, 'label': 'described by source'}, {'name_': 'P17', 'source': 1, 'target': 1, 'label': 'country'}, {'name_': 'P1343', 'source': 4, 'target': 0, 'label': 'described by source'}, {'name_': 'P1343', 'source': 5, 'target': 0, 'label': 'described by source'}, {'name_': 'P21', 'source': 5, 'target': 2, 'label': 'sex or gender'}, {'name_': 'P172', 'source': 5, 'target': 4, 'label': 'ethnic or cultural origin'}, {'name_': 'P21', 'source': 6, 'target': 2, 'label': 'sex or gender'}, {'name_': 'P19', 'source': 6, 'target': 3, 'label': 'place of birth'}, {'name_': 'P20', 'source': 6, 'target': 7, 'label': 'place of death'}, {'name_': 'P495', 'source': 8, 'target': 1, 'label': 'country of origin'}, {'name_': 'P1889', 'source': 8, 'target': 7, 'label': 'different from'}]}