story: [Peter] and his brother [James] just talked on the phone for the first time in years. [Peter]'s brother, [Alfred], and sister, [Carol], were helping [Carol]'s sister, [Rose], pull weeds in the garden.
query: ('Alfred', 'Rose')
clean_story: [Peter]'s brother, [Alfred], and sister, [Carol], were helping [Carol]'s sister, [Rose], pull weeds in the garden.
proof_state: [{('Alfred', 'sister', 'Rose'): [('Alfred', 'sister', 'Carol'), ('Carol', 'sister', 'Rose')]}, {('Alfred', 'sister', 'Carol'): [('Alfred', 'brother', 'Peter'), ('Peter', 'sister', 'Carol')]}]