story: John and Paul found a worm on the walking path. They were afraid Someone would step on the worm. John and Paul carried the worm to the safe grass. They decided to call the worm Wormy. John and Paul were glad they saved Wormy.
 selected sentence: They were afraid Someone would step on the worm.
John and Paul see a worm >Causes/Enables> John and Paul fear Someone will step on it