story: [Sandra] picked up her daughter [Lisbeth] from school early. [Louise] could n't wait for the surprise birthday party that she was throwing for her brother [Francisco] next weekend. [Francisco]'s brother [Kenneth] and mother [Lisbeth] met him early in the morning before his college graduation.
query: ('Kenneth', 'Sandra')
clean_story: [Francisco]'s brother [Kenneth] and mother [Lisbeth] met him early in the morning before his college graduation. [Sandra] picked up her daughter [Lisbeth] from school early.
proof_state: [{('Kenneth', 'grandmother', 'Sandra'): [('Kenneth', 'brother', 'Francisco'), ('Francisco', 'grandmother', 'Sandra')]}, {('Francisco', 'grandmother', 'Sandra'): [('Francisco', 'mother', 'Lisbeth'), ('Lisbeth', 'mother', 'Sandra')]}]