story: [Mark]'s grandmother [Molly] and his sisters [Rosie] and [Karen] went on a cruise together.
query: ('Molly', 'Karen')
clean_story: [Mark]'s grandmother [Molly] and his sisters [Rosie] and [Karen] went on a cruise together.
proof_state: [{('Molly', 'granddaughter', 'Karen'): [('Molly', 'grandson', 'Mark'), ('Mark', 'sister', 'Karen')]}, {('Mark', 'sister', 'Karen'): [('Mark', 'sister', 'Rosie'), ('Rosie', 'sister', 'Karen')]}]