The fact "You can use a screwdriver to tighten a screw" is illustrated with the story:1. A screw on the casket was loose.2. The funeral director needed to tighten the screw in order to prevent the dead body from falling out.3. The funeral director went to the closet.4. He took out a screwdriver.5. He used the screwdriver to tighten the loose screw on the casket.