story: [Crystal] is one of my favorite students. She is the younger sister of [Paul], who I taught last year, [Dulce] and her sister [Sabrina] braided each other's hair before school. [Sabrina] was shopping for a new jacket with her father [Paul].
query: ('Sabrina', 'Crystal')
clean_story: [Sabrina] was shopping for a new jacket with her father [Paul]. [Crystal] is one of my favorite students. She is the younger sister of [Paul], who I taught last year,
proof_state: [{('Sabrina', 'aunt', 'Crystal'): [('Sabrina', 'father', 'Paul'), ('Paul', 'sister', 'Crystal')]}]