story: [Myrna] and her son [William] went to the zoo and then out to dinner yesterday. [Myrna] picked up her daughter [Lucille] from school early.
query: ('Lucille', 'William')
clean_story: [Myrna] picked up her daughter [Lucille] from school early. [Myrna] and her son [William] went to the zoo and then out to dinner yesterday.
proof_state: [{('Lucille', 'brother', 'William'): [('Lucille', 'mother', 'Myrna'), ('Myrna', 'son', 'William')]}]