story: [Paul] took his son [Robert] to baseball practice. [Paul]'s daughter [Maria] was busy at soccer practice. [Robert] and his brother [Jess] were rarely seen apart.
query: ('Robert', 'Maria')
clean_story: [Paul] took his son [Robert] to baseball practice. [Paul]'s daughter [Maria] was busy at soccer practice.
proof_state: [{('Robert', 'sister', 'Maria'): [('Robert', 'father', 'Paul'), ('Paul', 'daughter', 'Maria')]}]