Who was the first king of Romania?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q458', 'id': 0, 'label': 'European Union'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q218', 'id': 1, 'label': 'Romania'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q846', 'id': 2, 'label': 'Qatar'}], 'links': [{'name_': 'P47', 'source': 0, 'target': 1, 'label': 'shares border with'}, {'name_': 'P530', 'source': 0, 'target': 2, 'label': 'diplomatic relation'}]}