story: [Nancy]'s father [Adam] took care of her son [Robert] for the weekend. [Claire] took her brother [Robert] to work Monday because his car was in the shop getting a tune up.
query: ('Robert', 'Adam')
clean_story: [Nancy]'s father [Adam] took care of her son [Robert] for the weekend.
proof_state: [{('Robert', 'grandfather', 'Adam'): [('Robert', 'mother', 'Nancy'), ('Nancy', 'father', 'Adam')]}]