story: [Sandra] took her daughter, [Lisbeth], out to High Tea yesterday afternoon. [Sandra] went to pick up her son, [James], and her daughter, [Lisa], from soccer practice. [Lisa] was unhappy with her son, [Stacy], and his grades. She enlisted a tutor to help him.
query: ('James', 'Stacy')
clean_story: [Sandra] went to pick up her son, [James], and her daughter, [Lisa], from soccer practice. [Lisa] was unhappy with her son, [Stacy], and his grades. She enlisted a tutor to help him.
proof_state: [{('James', 'nephew', 'Stacy'): [('James', 'sister', 'Lisa'), ('Lisa', 'son', 'Stacy')]}, {('James', 'sister', 'Lisa'): [('James', 'mother', 'Sandra'), ('Sandra', 'daughter', 'Lisa')]}]