Where did the singer of "Toxic" earn her high school degree from?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q134556', 'id': 0, 'label': 'single'}, {'type': 'INTERNAL', 'name_': 'Q837719', 'id': 1, 'label': 'Me Against the Music'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q379751', 'id': 2, 'label': 'Toxic'}], 'links': [{'name_': 'P31', 'source': 1, 'target': 0, 'label': 'instance of'}, {'name_': 'P156', 'source': 1, 'target': 2, 'label': 'followed by'}]}