story: [David] loves to play baseball with his dad, [Mark]. [Peter] and his brother [Mark] played at jacks. [Richard] asked his father [Mark] if he could have a video game and he said okay. [Lisbeth]'s nephew [David] is going with her to town.
query: ('Peter', 'Lisbeth')
clean_story: [Peter] and his brother [Mark] played at jacks. [David] loves to play baseball with his dad, [Mark]. [Lisbeth]'s nephew [David] is going with her to town.
proof_state: [{('Peter', 'sister', 'Lisbeth'): [('Peter', 'brother', 'Mark'), ('Mark', 'sister', 'Lisbeth')]}, {('Mark', 'sister', 'Lisbeth'): [('Mark', 'son', 'David'), ('David', 'aunt', 'Lisbeth')]}]