story: [Geraldine] wanted to bring all her siblings together for a family reunion so she called up her brother, [Brian], and her sister, [Stacy]. [Karen] and her sister [Stacy] are the only children in their family.
query: ('Stacy', 'Brian')
clean_story: [Geraldine] wanted to bring all her siblings together for a family reunion so she called up her brother, [Brian], and her sister, [Stacy].
proof_state: [{('Stacy', 'brother', 'Brian'): [('Stacy', 'sister', 'Geraldine'), ('Geraldine', 'brother', 'Brian')]}]