story: [Kevin] and his brother [Dan] wanted to backpack across Europe together once they graduated college. [Dorothy] drove her son [Kevin] to his soccer game.
query: ('Dorothy', 'Dan')
clean_story: [Dorothy] drove her son [Kevin] to his soccer game. [Kevin] and his brother [Dan] wanted to backpack across Europe together once they graduated college.
proof_state: [{('Dorothy', 'son', 'Dan'): [('Dorothy', 'son', 'Kevin'), ('Kevin', 'brother', 'Dan')]}]