story: [Valerie] and her sister [Marian] braided each other's hair before school. [Sandra] took her sister [Valerie] out for dinner to celebrate her birthday. [Karen] went shopping at the mall with her mother [Marian]
query: ('Karen', 'Sandra')
clean_story: [Karen] went shopping at the mall with her mother [Marian] [Valerie] and her sister [Marian] braided each other's hair before school. [Sandra] took her sister [Valerie] out for dinner to celebrate her birthday.
proof_state: [{('Karen', 'aunt', 'Sandra'): [('Karen', 'mother', 'Marian'), ('Marian', 'sister', 'Sandra')]}, {('Marian', 'sister', 'Sandra'): [('Marian', 'sister', 'Valerie'), ('Valerie', 'sister', 'Sandra')]}]