story: [Minnie] took her son [Dana] and daughter [Rebbeca] to the grocery store during her day off. [Rebbeca] is looking for a good gift for her sister [Tammy].
query: ('Rebbeca', 'Dana')
clean_story: [Minnie] took her son [Dana] and daughter [Rebbeca] to the grocery store during her day off.
proof_state: [{('Rebbeca', 'brother', 'Dana'): [('Rebbeca', 'mother', 'Minnie'), ('Minnie', 'son', 'Dana')]}]