story: [Donna] asked her two sisters [Michele] and [Sheila] if they were free for coffee this coming weekend.
query: ('Sheila', 'Michele')
clean_story: [Donna] asked her two sisters [Michele] and [Sheila] if they were free for coffee this coming weekend.
proof_state: [{('Sheila', 'sister', 'Michele'): [('Sheila', 'sister', 'Donna'), ('Donna', 'sister', 'Michele')]}]