story: [Christopher] 'son [Jose] and [Jose]'s grandfather [Jason] went on a cruise together.
query: ('Christopher', 'Jason')
clean_story: [Christopher] 'son [Jose] and [Jose]'s grandfather [Jason] went on a cruise together.
proof_state: [{('Christopher', 'father', 'Jason'): [('Christopher', 'son', 'Jose'), ('Jose', 'grandfather', 'Jason')]}]