story: [Donna] is taking a trip to see her sister [Sheila]. [Lisa] picked up her daughter [Sheila] from school early.
query: ('Donna', 'Lisa')
clean_story: [Donna] is taking a trip to see her sister [Sheila]. [Lisa] picked up her daughter [Sheila] from school early.
proof_state: [{('Donna', 'mother', 'Lisa'): [('Donna', 'sister', 'Sheila'), ('Sheila', 'mother', 'Lisa')]}]