story: [Minnie]'s son, [Dana], was busy with school activities and forgot to meet his sister. [Minnie] and her daughter [Ellen] went out to dinner. [Minnie] and her sister [Crystal] played golf together. [Minnie] won easily.
query: ('Crystal', 'Ellen')
clean_story: [Minnie] and her sister [Crystal] played golf together. [Minnie] won easily. [Minnie] and her daughter [Ellen] went out to dinner.
proof_state: [{('Crystal', 'niece', 'Ellen'): [('Crystal', 'sister', 'Minnie'), ('Minnie', 'daughter', 'Ellen')]}]