story: [Robert] was sad to learn that his sister [Maria] was not going to make it to dinner like they had planned. [Paul] went hunting with his son, [Robert]. [Adam] is a man with a son named [Paul].
query: ('Robert', 'Adam')
clean_story: [Paul] went hunting with his son, [Robert]. [Adam] is a man with a son named [Paul].
proof_state: [{('Robert', 'grandfather', 'Adam'): [('Robert', 'father', 'Paul'), ('Paul', 'father', 'Adam')]}]