story: [Dorothy]'s son, [Dan], was busy with school activities and forgot to meet his sister. [Dorothy] was sewing a sweater for her sister [Myrna].
query: ('Myrna', 'Dan')
clean_story: [Dorothy] was sewing a sweater for her sister [Myrna]. [Dorothy]'s son, [Dan], was busy with school activities and forgot to meet his sister.
proof_state: [{('Myrna', 'nephew', 'Dan'): [('Myrna', 'sister', 'Dorothy'), ('Dorothy', 'son', 'Dan')]}]