story: Dan's class was in the library at school. A boy across the room stuck his tongue out at Dan. Without thinking Dan threw a book at the boy. The book hit the boy on the nose which began to bleed. Dan knew he would be in big trouble for throwing a book.
 selected sentence: A boy across the room stuck his tongue out at Dan.
A boy sticks his tongue out at Dan >Causes/Enables> Dan throws a book at the boy