story: [Scott] and his sister, [Sheila], went shopping. [Sheila] asked her mom [Lisa] if she wanted anything, but [Lisa] said no.
query: ('Scott', 'Lisa')
clean_story: [Scott] and his sister, [Sheila], went shopping. [Sheila] asked her mom [Lisa] if she wanted anything, but [Lisa] said no.
proof_state: [{('Scott', 'mother', 'Lisa'): [('Scott', 'sister', 'Sheila'), ('Sheila', 'mother', 'Lisa')]}]