story: [Stacy]'s father, [Peter], needed help with the dishes. [Peter]'s daughter, [Eustolia], volunteered to assist. [Eustolia] stayed with his grandmother [Sandra] last summer on her farm. He had a great time. [Eustolia] does n't like her brother [Erik].
query: ('Stacy', 'Sandra')
clean_story: [Stacy]'s father, [Peter], needed help with the dishes. [Peter]'s daughter, [Eustolia], volunteered to assist. [Eustolia] stayed with his grandmother [Sandra] last summer on her farm. He had a great time.
proof_state: [{('Stacy', 'grandmother', 'Sandra'): [('Stacy', 'father', 'Peter'), ('Peter', 'mother', 'Sandra')]}, {('Peter', 'mother', 'Sandra'): [('Peter', 'daughter', 'Eustolia'), ('Eustolia', 'grandmother', 'Sandra')]}]