story: [Sandra] likes taking her son [James] to school. [Erik] loved his mother, [Lisa]. [Erik] and his brother [Stacy] wanted to backpack across Europe together once they graduated college. [Sandra] and her daughter [Lisa] went out for ice cream. [Sandra] got a cone and [Lisa] got a sundae.
query: ('Sandra', 'Stacy')
clean_story: [Sandra] and her daughter [Lisa] went out for ice cream. [Sandra] got a cone and [Lisa] got a sundae. [Erik] loved his mother, [Lisa]. [Erik] and his brother [Stacy] wanted to backpack across Europe together once they graduated college.
proof_state: [{('Sandra', 'grandson', 'Stacy'): [('Sandra', 'grandson', 'Erik'), ('Erik', 'brother', 'Stacy')]}, {('Sandra', 'grandson', 'Erik'): [('Sandra', 'daughter', 'Lisa'), ('Lisa', 'son', 'Erik')]}]