Grouping Results

<html><head>
      <meta http-equiv="Content-Type" content="text/xhtml; charset=UTF-8"/>
   <title>Grouping By Adjacent Key Value</title></head><body><p>Do <em>not</em>:
    </p><ul>
    <li>talk,</li>
    <li>eat, or</li>
    <li>use your mobile telephone</li>
    </ul><p>
while you are in the cinema.</p></body></html>