story: [Christopher] is an engineer who loves to take his son [Jeffrey] to the science museum to help him learn about the world [Lisa]'s brother [Christopher] was going to be the star in the new show.
query: ('Lisa', 'Jeffrey')
clean_story: [Lisa]'s brother [Christopher] was going to be the star in the new show. [Christopher] is an engineer who loves to take his son [Jeffrey] to the science museum to help him learn about the world
proof_state: [{('Lisa', 'nephew', 'Jeffrey'): [('Lisa', 'brother', 'Christopher'), ('Christopher', 'son', 'Jeffrey')]}]