story: [Crystal] took her daughter [Mary] to school during the cold winter morning. [Rosemary] was talking about food with her sister [Glenna]. [Mary] is taking a trip to see her sister [Rosemary].
query: ('Mary', 'Glenna')
clean_story: [Mary] is taking a trip to see her sister [Rosemary]. [Rosemary] was talking about food with her sister [Glenna].
proof_state: [{('Mary', 'sister', 'Glenna'): [('Mary', 'sister', 'Rosemary'), ('Rosemary', 'sister', 'Glenna')]}]