story: [Myrna]'s son, [William], likes to draw pictures. [Myrna] likes to take the pictures to her mother, [Gabrielle].
query: ('Gabrielle', 'William')
clean_story: [Myrna]'s son, [William], likes to draw pictures. [Myrna] likes to take the pictures to her mother, [Gabrielle].
proof_state: [{('Gabrielle', 'grandson', 'William'): [('Gabrielle', 'daughter', 'Myrna'), ('Myrna', 'son', 'William')]}]