story: [Sandra] and her husband, [Rudolph], are going to Florida for their second anniversary. [Mark] is the proud husband of the lovely [Carol]. [Carol] brought her son [David] and her father [Rudolph] with her to the local swap-meet to hunt for nice antiques.
query: ('Sandra', 'David')
clean_story: [Sandra] and her husband, [Rudolph], are going to Florida for their second anniversary. [Carol] brought her son [David] and her father [Rudolph] with her to the local swap-meet to hunt for nice antiques.
proof_state: [{('Sandra', 'grandson', 'David'): [('Sandra', 'husband', 'Rudolph'), ('Rudolph', 'grandson', 'David')]}, {('Rudolph', 'grandson', 'David'): [('Rudolph', 'daughter', 'Carol'), ('Carol', 'son', 'David')]}]