story: [Elliott] took his wife, [Marian], out to see a play. [Marian]'s daughter, [Darnell], stayed home to do homework. [Darnell] received a very nice letter from her grandfather [Stanley].
query: ('Elliott', 'Stanley')
clean_story: [Elliott] took his wife, [Marian], out to see a play. [Marian]'s daughter, [Darnell], stayed home to do homework. [Darnell] received a very nice letter from her grandfather [Stanley].
proof_state: [{('Elliott', 'father-in-law', 'Stanley'): [('Elliott', 'wife', 'Marian'), ('Marian', 'father', 'Stanley')]}, {('Marian', 'father', 'Stanley'): [('Marian', 'daughter', 'Darnell'), ('Darnell', 'grandfather', 'Stanley')]}]