story: [Anthony] took his parents, [Sandra] and [James], his gas grill. [Sandra] wanted to cook steaks for her brother [Alan].
query: ('Alan', 'Anthony')
clean_story: [Anthony] took his parents, [Sandra] and [James], his gas grill. [Sandra] wanted to cook steaks for her brother [Alan].
proof_state: [{('Alan', 'nephew', 'Anthony'): [('Alan', 'sister', 'Sandra'), ('Sandra', 'son', 'Anthony')]}, {('Sandra', 'son', 'Anthony'): [('Sandra', 'husband', 'James'), ('James', 'son', 'Anthony')]}]