story: [Robert] and his brother [Leo] went to the park. They threw a ball around and played with their dog. [Paul] took his son [Jess] out for ice cream. [Paul]'s son [Leo], was still in school.
query: ('Leo', 'Jess')
clean_story: [Paul] took his son [Jess] out for ice cream. [Paul]'s son [Leo], was still in school.
proof_state: [{('Leo', 'brother', 'Jess'): [('Leo', 'father', 'Paul'), ('Paul', 'son', 'Jess')]}]