What was the third book Roald Dahl wrote?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q7411', 'id': 0, 'label': 'Dutch'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q25161', 'id': 1, 'label': 'Roald Dahl'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1646751', 'id': 2, 'label': 'Roald'}, {'type': 'INTERNAL', 'name_': 'Q57505200', 'id': 3, 'label': None}], 'links': [{'name_': 'P407', 'source': 2, 'target': 0, 'label': 'language of work or name'}, {'name_': 'P407', 'source': 3, 'target': 0, 'label': 'language of work or name'}, {'name_': 'P1877', 'source': 3, 'target': 1, 'label': 'after a work by'}]}