story: A boy had his father come in to tuck him in, like every night. He asked his dad to look under the bed for monsters. Under the bed he found a stuffed dinosaur. It was his favorite, an apatosaurus. It was the father's birthday and this was his present.
 selected sentence: It was his favorite, an apatosaurus.
The apatosaurus is the boy's favorite dinosaur >Causes> The boy feel(s) delighted by the apatosaurus