story: [Sandra] loves to make cookies for her son. His name is [Peter]. [Sandra] took her son [Mark] to the football game. [Eustolia] is a daughter of [Peter] it seems. [Sandra] could n't wait to get off the plane to see her mother, [Lisbeth].
query: ('Lisbeth', 'Eustolia')
clean_story: [Sandra] could n't wait to get off the plane to see her mother, [Lisbeth]. [Sandra] loves to make cookies for her son. His name is [Peter]. [Eustolia] is a daughter of [Peter] it seems.
proof_state: [{('Lisbeth', 'niece', 'Eustolia'): [('Lisbeth', 'brother', 'Peter'), ('Peter', 'daughter', 'Eustolia')]}, {('Lisbeth', 'brother', 'Peter'): [('Lisbeth', 'mother', 'Sandra'), ('Sandra', 'son', 'Peter')]}]