story: [Sandra] took her daughter [Carol] to the store to find her some new boots for the cold winter weather. [Carol] was playing in the sandbox with her brother [Peter]. [David] loved his mother, [Carol], very much. [Peter] has a sibling who is much younger than he is. They get along well and his name is [Alfred].
query: ('David', 'Alfred')
clean_story: [David] loved his mother, [Carol], very much. [Carol] was playing in the sandbox with her brother [Peter]. [Peter] has a sibling who is much younger than he is. They get along well and his name is [Alfred].
proof_state: [{('David', 'uncle', 'Alfred'): [('David', 'mother', 'Carol'), ('Carol', 'brother', 'Alfred')]}, {('Carol', 'brother', 'Alfred'): [('Carol', 'brother', 'Peter'), ('Peter', 'brother', 'Alfred')]}]