Which Jules Verne book was about an explorer who went to the center of the earth?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q33977', 'id': 0, 'label': 'Jules Verne'}, {'type': 'INTERNAL', 'name_': 'Q3053531', 'id': 1, 'label': 'Journey to the Center of the Earth'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q219457', 'id': 2, 'label': 'A Journey to the Center of the Earth'}], 'links': [{'name_': 'P1877', 'source': 1, 'target': 0, 'label': 'after a work by'}, {'name_': 'P941', 'source': 1, 'target': 2, 'label': 'inspired by'}]}