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 <section>
        <h1>Forest elephants</h1>
         <section>
                <h1>Introduction</h1>
                <p>In this section, we discuss the lesser known forest elephants.
         </section>
         <section>
                <h1>Habitat</h1>
                <p>Forest elephants do not live in trees but among them.
         </section>
         <aside>
                <p>advertising block
         </aside>
 </section>
 <footer>
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 </footer>