story: [Preston] is a man with a son named [Edward]. [Edward] and his sister [Stacy] love going to the movies. Sometime [Edward] invites his grandmother [Michelle]
query: ('Michelle', 'Stacy')
clean_story: [Edward] and his sister [Stacy] love going to the movies. Sometime [Edward] invites his grandmother [Michelle]
proof_state: [{('Michelle', 'granddaughter', 'Stacy'): [('Michelle', 'grandson', 'Edward'), ('Edward', 'sister', 'Stacy')]}]