story: [James] is proud of his son. His name is [Mark]. [Adam] said good-bye to his grandfather, [Bernard]. [Bernard]'s brother, [Mark], stood there silently during the exchange, a sad expression on his face.
query: ('Mark', 'Adam')
clean_story: [Adam] said good-bye to his grandfather, [Bernard]. [Bernard]'s brother, [Mark], stood there silently during the exchange, a sad expression on his face.
proof_state: [{('Mark', 'grandfather', 'Adam'): [('Mark', 'brother', 'Bernard'), ('Bernard', 'grandfather', 'Adam')]}]