story: [Sandra] asked her husband [Rudolph] if he had any news about the family. [Rudolph] told her that his grandson [Stacy] kept getting into fights with his brother [Erik] at school. [Stacy] liked to play games with his sister, [Eustolia].
query: ('Sandra', 'Erik')
clean_story: [Sandra] asked her husband [Rudolph] if he had any news about the family. [Rudolph] told her that his grandson [Stacy] kept getting into fights with his brother [Erik] at school.
proof_state: [{('Sandra', 'grandson', 'Erik'): [('Sandra', 'husband', 'Rudolph'), ('Rudolph', 'grandson', 'Erik')]}, {('Rudolph', 'grandson', 'Erik'): [('Rudolph', 'grandson', 'Stacy'), ('Stacy', 'brother', 'Erik')]}]