Who was George H. W. Bush's vice president?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q30', 'id': 0, 'label': 'United States of America'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q23505', 'id': 1, 'label': 'George H. W. Bush'}, {'type': 'INTERNAL', 'name_': 'Q2518', 'id': 2, 'label': 'Helmut Kohl'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q969644', 'id': 3, 'label': 'Eric M. Warburg Award'}, {'type': 'INTERNAL', 'name_': 'Q66107', 'id': 4, 'label': 'Henry Kissinger'}, {'type': 'INTERNAL', 'name_': 'Q1524036', 'id': 5, 'label': 'Tapestry of the Century'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P6', 'source': 0, 'target': 1, 'label': 'head of government'}, {'name_': 'P166', 'source': 2, 'target': 3, 'label': 'award received'}, {'name_': 'P27', 'source': 4, 'target': 0, 'label': 'country of citizenship'}, {'name_': 'P166', 'source': 4, 'target': 3, 'label': 'award received'}, {'name_': 'P180', 'source': 5, 'target': 1, 'label': 'depicts'}, {'name_': 'P180', 'source': 5, 'target': 2, 'label': 'depicts'}]}