story: [Nancy]'s son, [Robert], has always wanted to be like [Paul], [Nancy]'s husband. [Jess] loved his mother, [Nancy].
query: ('Paul', 'Robert')
clean_story: [Nancy]'s son, [Robert], has always wanted to be like [Paul], [Nancy]'s husband.
proof_state: [{('Paul', 'son', 'Robert'): [('Paul', 'wife', 'Nancy'), ('Nancy', 'son', 'Robert')]}]