story: [Marian] took her son [Sidney] to school this morning because he missed the bus. [Sandra] is always around her brother [Elliott]. [Elliott] was sitting poolside with his wife [Marian].
query: ('Sandra', 'Sidney')
clean_story: [Sandra] is always around her brother [Elliott]. [Elliott] was sitting poolside with his wife [Marian]. [Marian] took her son [Sidney] to school this morning because he missed the bus.
proof_state: [{('Sandra', 'nephew', 'Sidney'): [('Sandra', 'brother', 'Elliott'), ('Elliott', 'son', 'Sidney')]}, {('Elliott', 'son', 'Sidney'): [('Elliott', 'wife', 'Marian'), ('Marian', 'son', 'Sidney')]}]