story: [William] went to his grand parent [Jason] and [Gabrielle] wedding anniversary
query: ('Gabrielle', 'William')
clean_story: [William] went to his grand parent [Jason] and [Gabrielle] wedding anniversary
proof_state: [{('Gabrielle', 'grandson', 'William'): [('Gabrielle', 'husband', 'Jason'), ('Jason', 'grandson', 'William')]}]