story: [Diana] was excited for today, its her daughter's, [Rose], spring break. She will finally get to see her. [Rudolph] was having lunch with his daughter [Rose] and his son [Alfred]. [Rose] was telling [Rudolph] how her son [Casey] was doing so well in school.
query: ('Casey', 'Alfred')
clean_story: [Rudolph] was having lunch with his daughter [Rose] and his son [Alfred]. [Rose] was telling [Rudolph] how her son [Casey] was doing so well in school.
proof_state: [{('Casey', 'uncle', 'Alfred'): [('Casey', 'mother', 'Rose'), ('Rose', 'brother', 'Alfred')]}, {('Rose', 'brother', 'Alfred'): [('Rose', 'father', 'Rudolph'), ('Rudolph', 'son', 'Alfred')]}]