story: [Erik] went to the store with his brother, [Stacy]. [Sandra] and her husband [Rudolph] went shopping for Christmas presents one afternoon at the local mall. [Sandra] played cards with her grandson [Erik]. [Erik]'s sister [Eustolia] played video games instead.
query: ('Rudolph', 'Eustolia')
clean_story: [Sandra] and her husband [Rudolph] went shopping for Christmas presents one afternoon at the local mall. [Sandra] played cards with her grandson [Erik]. [Erik]'s sister [Eustolia] played video games instead.
proof_state: [{('Rudolph', 'granddaughter', 'Eustolia'): [('Rudolph', 'grandson', 'Erik'), ('Erik', 'sister', 'Eustolia')]}, {('Rudolph', 'grandson', 'Erik'): [('Rudolph', 'wife', 'Sandra'), ('Sandra', 'grandson', 'Erik')]}]