story: [Rudolph] is an engineer who loves to take his son [Peter] to the science museum to help him learn about the world [Danita] went on a trip with her grandfather, [Rudolph] and his wife, [Sandra]. [Danita]'s brother, [Stacy], had to work and could n't join her.
query: ('Sandra', 'Stacy')
clean_story: [Danita] went on a trip with her grandfather, [Rudolph] and his wife, [Sandra]. [Danita]'s brother, [Stacy], had to work and could n't join her.
proof_state: [{('Sandra', 'grandson', 'Stacy'): [('Sandra', 'husband', 'Rudolph'), ('Rudolph', 'grandson', 'Stacy')]}, {('Rudolph', 'grandson', 'Stacy'): [('Rudolph', 'granddaughter', 'Danita'), ('Danita', 'brother', 'Stacy')]}]