What was the first published novel by Kurt Vonnegut?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q49074', 'id': 0, 'label': 'Kurt Vonnegut'}, {'type': 'INTERNAL', 'name_': 'Q977109', 'id': 1, 'label': 'Tralfamadore'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q2294155', 'id': 2, 'label': 'The Sirens of Titan'}], 'links': [{'name_': 'P170', 'source': 1, 'target': 0, 'label': 'creator'}, {'name_': 'P1441', 'source': 1, 'target': 2, 'label': 'present in work'}]}