, questions from the audience, and so on.
            </p>
            
         </li>
         
         <li>
            
            <p>
               								       
               <strong>An animation that illustrates how a car engine works</strong>
               							     
            </p>
            
            <p>An animation shows how a car engine works. There is no audio and the animation is
               part of a tutorial that describes how an engine works. Since the text of the tutorial
