According to Aesop's Fables, which animal did the tortoise beat in a race?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q43423', 'id': 0, 'label': 'Aesop'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q865902', 'id': 1, 'label': "Aesop's Fables"}], 'links': [{'name_': 'P800', 'source': 0, 'target': 1, 'label': 'notable work'}]}