story: Bart loved to skateboard. He would always skate around the school. The principal didn't allow him to skate. One day the principal caught him skating and took his board! Bart had to wait until the end of the day to get it back.
 selected sentence: The principal didn't allow him to skate.
The principal sees Bart skating at school >Causes/Enables> The principal doesn't allow Bart to skate at school