Who is the oldest state governor?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q28640', 'id': 0, 'label': 'profession'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q132050', 'id': 1, 'label': 'governor'}, {'type': 'INTERNAL', 'name_': 'Q55597102', 'id': 2, 'label': 'governor of Lyon'}], 'links': [{'name_': 'P31', 'source': 2, 'target': 0, 'label': 'instance of'}, {'name_': 'P31', 'source': 2, 'target': 1, 'label': 'instance of'}]}