story: [Leo] and his sister [Maria] stood in line at the fair. [Paul]'s daughter, [Maria], always preferred her grandfather, [Adam], over everyone else.
query: ('Paul', 'Adam')
clean_story: [Paul]'s daughter, [Maria], always preferred her grandfather, [Adam], over everyone else.
proof_state: [{('Paul', 'father', 'Adam'): [('Paul', 'daughter', 'Maria'), ('Maria', 'grandfather', 'Adam')]}]