story: [Preston] took his daughter [Karen] to the zoo for her birthday. Then they went to go get some ice cream. [Preston] wanted to teach his son [Brian] to play football. So [Preston] asked his brother [Otto] to come help teach him.
query: ('Brian', 'Otto')
clean_story: [Preston] wanted to teach his son [Brian] to play football. So [Preston] asked his brother [Otto] to come help teach him.
proof_state: [{('Brian', 'uncle', 'Otto'): [('Brian', 'father', 'Preston'), ('Preston', 'brother', 'Otto')]}]