story: [Mark] asked his father, [Rudolph] to help him build a birdhouse. [Casey] went to the park with his father, [James]. [James] has always been strict with his daughter, [Jeannette]. He feels it will help her become a disciplined adult. [Rudolph] bought a book for his son [James].
query: ('Casey', 'Mark')
clean_story: [Casey] went to the park with his father, [James]. [Rudolph] bought a book for his son [James]. [Mark] asked his father, [Rudolph] to help him build a birdhouse.
proof_state: [{('Casey', 'uncle', 'Mark'): [('Casey', 'father', 'James'), ('James', 'brother', 'Mark')]}, {('James', 'brother', 'Mark'): [('James', 'father', 'Rudolph'), ('Rudolph', 'son', 'Mark')]}]