story: [Willie] and her sister [Louise] are planning on a short vacation. They are planning on visiting their mother [Lisbeth] in London for Spring break. [Willie] and his brother [Kenneth] wanted to backpack across Europe together once they graduated college. [Sandra] picked up her daughter [Lisbeth] from school early.
query: ('Willie', 'Sandra')
clean_story: [Willie] and her sister [Louise] are planning on a short vacation. They are planning on visiting their mother [Lisbeth] in London for Spring break. [Sandra] picked up her daughter [Lisbeth] from school early.
proof_state: [{('Willie', 'grandmother', 'Sandra'): [('Willie', 'mother', 'Lisbeth'), ('Lisbeth', 'mother', 'Sandra')]}, {('Willie', 'mother', 'Lisbeth'): [('Willie', 'sister', 'Louise'), ('Louise', 'mother', 'Lisbeth')]}]