story: [Sandra] loves her brother [Elliott]. [Alan] took his sister [Sandra] to the movies with him to see the new Star Wars film. [Elliott] is frustrated teaching his son how to drive. His son is [Mark].
query: ('Alan', 'Mark')
clean_story: [Alan] took his sister [Sandra] to the movies with him to see the new Star Wars film. [Sandra] loves her brother [Elliott]. [Elliott] is frustrated teaching his son how to drive. His son is [Mark].
proof_state: [{('Alan', 'nephew', 'Mark'): [('Alan', 'brother', 'Elliott'), ('Elliott', 'son', 'Mark')]}, {('Alan', 'brother', 'Elliott'): [('Alan', 'sister', 'Sandra'), ('Sandra', 'brother', 'Elliott')]}]