story: [Dana] and his father [Otto] played video games all day last Saturday. [John] asked his father, [Otto] to help him build a birdhouse. [Otto] has a daughter named [Rebbeca] who visits him every Sunday for dinner.
query: ('Dana', 'John')
clean_story: [Dana] and his father [Otto] played video games all day last Saturday. [John] asked his father, [Otto] to help him build a birdhouse.
proof_state: [{('Dana', 'brother', 'John'): [('Dana', 'father', 'Otto'), ('Otto', 'son', 'John')]}]