story: [Lisa] has a son called [Stacy]. Each day they go to the park after school. [Erik] and his brother [Stacy] decided to play paintball on Saturday. [Lisa] went with her husband [Peter] to the park to watch the sunset. [Stacy] was having an argument with her sister, [Michelle].
query: ('Peter', 'Erik')
clean_story: [Lisa] went with her husband [Peter] to the park to watch the sunset. [Lisa] has a son called [Stacy]. Each day they go to the park after school. [Erik] and his brother [Stacy] decided to play paintball on Saturday.
proof_state: [{('Peter', 'son', 'Erik'): [('Peter', 'son', 'Stacy'), ('Stacy', 'brother', 'Erik')]}, {('Peter', 'son', 'Stacy'): [('Peter', 'wife', 'Lisa'), ('Lisa', 'son', 'Stacy')]}]