What Supreme Court Judge served the longest?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q30', 'id': 0, 'label': 'United States of America'}, {'type': 'INTERNAL', 'name_': 'Q5', 'id': 1, 'label': 'human'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1391996', 'id': 2, 'label': 'William O. Douglas'}, {'type': 'INTERNAL', 'name_': 'Q6370892', 'id': 3, 'label': 'Karin Maria Bruzelius'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q55736868', 'id': 4, 'label': 'national supreme court judge'}, {'type': 'INTERNAL', 'name_': 'Q503547', 'id': 5, 'label': 'Andrew Adams'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P27', 'source': 2, 'target': 0, 'label': 'country of citizenship'}, {'name_': 'P31', 'source': 2, 'target': 1, 'label': 'instance of'}, {'name_': 'P31', 'source': 3, 'target': 1, 'label': 'instance of'}, {'name_': 'P39', 'source': 3, 'target': 4, 'label': 'position held'}, {'name_': 'P27', 'source': 5, 'target': 0, 'label': 'country of citizenship'}, {'name_': 'P31', 'source': 5, 'target': 1, 'label': 'instance of'}, {'name_': 'P39', 'source': 5, 'target': 4, 'label': 'position held'}]}