story: [Valerie] took her son [Clarence] to school and his grandfather [Stanley] picked him up at then end of the school day. [Stanley] does not know he has a son named [James].
query: ('Valerie', 'James')
clean_story: [Valerie] took her son [Clarence] to school and his grandfather [Stanley] picked him up at then end of the school day. [Stanley] does not know he has a son named [James].
proof_state: [{('Valerie', 'brother', 'James'): [('Valerie', 'father', 'Stanley'), ('Stanley', 'son', 'James')]}, {('Valerie', 'father', 'Stanley'): [('Valerie', 'son', 'Clarence'), ('Clarence', 'grandfather', 'Stanley')]}]