What was Langston Hughes' second poem collection?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1316544', 'id': 0, 'label': 'Guggenheim Fellowship'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q188093', 'id': 1, 'label': 'Langston Hughes'}, {'type': 'INTERNAL', 'name_': 'Q270715', 'id': 2, 'label': 'Gwendolyn Brooks'}], 'links': [{'name_': 'P166', 'source': 2, 'target': 0, 'label': 'award received'}, {'name_': 'P737', 'source': 2, 'target': 1, 'label': 'influenced by'}]}