story: [Otto] needed someone to help him move out of his dorm last May. He asked his brother [Preston] and he said he would help him. [Otto] is an engineer who loves to take his son [Dana] to the science museum to help him learn about the world [Otto] went to pick up his son [John] from the baseball practice.
query: ('Preston', 'Dana')
clean_story: [Otto] needed someone to help him move out of his dorm last May. He asked his brother [Preston] and he said he would help him. [Otto] is an engineer who loves to take his son [Dana] to the science museum to help him learn about the world
proof_state: [{('Preston', 'nephew', 'Dana'): [('Preston', 'brother', 'Otto'), ('Otto', 'son', 'Dana')]}]