story: [Mark]'s sister [Lisbeth] asked him for some help planting her garden. [James] lit the campfire with his sister [Lisbeth] while his son [Casey] gathered wood. [Casey] went to the baseball game with his brother [Scott].
query: ('Casey', 'Mark')
clean_story: [James] lit the campfire with his sister [Lisbeth] while his son [Casey] gathered wood. [Mark]'s sister [Lisbeth] asked him for some help planting her garden.
proof_state: [{('Casey', 'uncle', 'Mark'): [('Casey', 'father', 'James'), ('James', 'brother', 'Mark')]}, {('James', 'brother', 'Mark'): [('James', 'sister', 'Lisbeth'), ('Lisbeth', 'brother', 'Mark')]}]