story: [Stacy] does n't like her brother [Brian]. [Stacy] went out for pizza with her father [Preston]. [Edward] enjoys talking to his sister. Her name is [Stacy].
query: ('Edward', 'Brian')
clean_story: [Edward] enjoys talking to his sister. Her name is [Stacy]. [Stacy] does n't like her brother [Brian].
proof_state: [{('Edward', 'brother', 'Brian'): [('Edward', 'sister', 'Stacy'), ('Stacy', 'brother', 'Brian')]}]