story: [Fletcher]'s sister, [Dulce], participated in the dance contest. [Fletcher] liked to play games with his sister, [Claire]. [Nancy] took her son [Fletcher] to the park for the afternoon.
query: ('Nancy', 'Claire')
clean_story: [Nancy] took her son [Fletcher] to the park for the afternoon. [Fletcher] liked to play games with his sister, [Claire].
proof_state: [{('Nancy', 'daughter', 'Claire'): [('Nancy', 'son', 'Fletcher'), ('Fletcher', 'sister', 'Claire')]}]