story: [Myrna] and her sister [Lisa] braided each other's hair before school. [Lisa] and her sister [Alma] are the only children in their family.
query: ('Alma', 'Myrna')
clean_story: [Lisa] and her sister [Alma] are the only children in their family. [Myrna] and her sister [Lisa] braided each other's hair before school.
proof_state: [{('Alma', 'sister', 'Myrna'): [('Alma', 'sister', 'Lisa'), ('Lisa', 'sister', 'Myrna')]}]