story: [Sandra] liked to play hide and seek with her son [Mark]. [Mark] is raising his daughter, [Anna] all by himself. [Rudolph] took the kids to a babysitter so he could have a great date with his wife, [Sandra]. [Mark] does not know he has a son named [David].
query: ('Rudolph', 'David')
clean_story: [Rudolph] took the kids to a babysitter so he could have a great date with his wife, [Sandra]. [Sandra] liked to play hide and seek with her son [Mark]. [Mark] does not know he has a son named [David].
proof_state: [{('Rudolph', 'grandson', 'David'): [('Rudolph', 'son', 'Mark'), ('Mark', 'son', 'David')]}, {('Rudolph', 'son', 'Mark'): [('Rudolph', 'wife', 'Sandra'), ('Sandra', 'son', 'Mark')]}]