Who ran for president in 2020 and graduated from Wharton Business School?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q11696', 'id': 0, 'label': 'President of the United States'}, {'type': 'INTERNAL', 'name_': 'Q207', 'id': 1, 'label': 'George W. Bush'}, {'type': 'INTERNAL', 'name_': 'Q1025171', 'id': 2, 'label': '2005 Cadillac DTS Presidential State Car'}, {'type': 'INTERNAL', 'name_': 'Q11220', 'id': 3, 'label': 'United States Navy'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q1329269', 'id': 4, 'label': 'The Wharton School'}, {'type': 'INTERNAL', 'name_': 'Q6913529', 'id': 5, 'label': 'Morrie Yohai'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q2745015', 'id': 6, 'label': 'Presidential state car'}, {'type': 'INTERNAL', 'name_': 'Q6631599', 'id': 7, 'label': 'list of official vehicles of the president of the United States'}], 'links': [{'name_': 'P39', 'source': 1, 'target': 0, 'label': 'position held'}, {'name_': 'P3438', 'source': 1, 'target': 2, 'label': 'vehicle normally used'}, {'name_': 'P241', 'source': 5, 'target': 3, 'label': 'military branch'}, {'name_': 'P69', 'source': 5, 'target': 4, 'label': 'educated at'}, {'name_': 'P155', 'source': 6, 'target': 2, 'label': 'follows'}, {'name_': 'P361', 'source': 6, 'target': 7, 'label': 'part of'}, {'name_': 'P137', 'source': 7, 'target': 3, 'label': 'operator'}]}