story: [Robert] and his father [Paul] played video games all day last Saturday. [Paul] is happy that his brother, [Otto], is becoming successful. [James] hit his brother [Paul] in the head.
query: ('Robert', 'Otto')
clean_story: [Robert] and his father [Paul] played video games all day last Saturday. [Paul] is happy that his brother, [Otto], is becoming successful.
proof_state: [{('Robert', 'uncle', 'Otto'): [('Robert', 'father', 'Paul'), ('Paul', 'brother', 'Otto')]}]