story: [Sandra] picked up her granddaughter [Jeannette] up early from daycare to play on the playground. [Sandra] took his son [James] and his kids [Errol] and [Edward] on a vacation
query: ('Sandra', 'Errol')
clean_story: [Sandra] took his son [James] and his kids [Errol] and [Edward] on a vacation
proof_state: [{('Sandra', 'grandson', 'Errol'): [('Sandra', 'grandson', 'Edward'), ('Edward', 'brother', 'Errol')]}, {('Edward', 'brother', 'Errol'): [('Edward', 'father', 'James'), ('James', 'son', 'Errol')]}]