story: [James] went his brother to pick up his brother's daughter [Lucille] from a birthday party. [Christopher] took his daughter, [Lucille], to the Cavaliers game on Saturday.
query: ('Christopher', 'James')
clean_story: [Christopher] took his daughter, [Lucille], to the Cavaliers game on Saturday. [James] went his brother to pick up his brother's daughter [Lucille] from a birthday party.
proof_state: [{('Christopher', 'brother', 'James'): [('Christopher', 'daughter', 'Lucille'), ('Lucille', 'uncle', 'James')]}]