story: [Mack] went camping with his brother [Edward] and his grandfather [Adam]. [Brian]'s brother, [Mack], recently got elected as a senator.
query: ('Adam', 'Edward')
clean_story: [Mack] went camping with his brother [Edward] and his grandfather [Adam].
proof_state: [{('Adam', 'grandson', 'Edward'): [('Adam', 'grandson', 'Mack'), ('Mack', 'brother', 'Edward')]}]