story: [Anna] is taking a trip to see her sister [Angela]. [Angela]'s brother [William] was going to be the star in the new show.
query: ('Anna', 'William')
clean_story: [Anna] is taking a trip to see her sister [Angela]. [Angela]'s brother [William] was going to be the star in the new show.
proof_state: [{('Anna', 'brother', 'William'): [('Anna', 'sister', 'Angela'), ('Angela', 'brother', 'William')]}]