aria-labelledby

<main role="main" aria-label="main content">
<section>
        <article>
            <h2>Подзаголовок 1</h2>
            <p>техт 1</p>
        </article>

		  <article>
            <h2>Подзаголовок 1</h2>
            <p><a href="b.html" rel="bookmark">This permalink applies to
   the outer ARTICLE element</a> (which could be, e.g., a blog post).</p>
<p>role="button"</p>
        </article>

</section>
</main>


<article role="article" aria-labelledby="title">
    <header>
        <h1 id="title">An article about markup!</h1>
   </header>
   <section role="region" aria-labelledby="eg1">
        <header>
             <h1 id="eg1">Example 1</h1>
        </header>
   </section>
   <section role="region" aria-labelledby="eg2">
        <header>
            <h1 id="eg2">Example 2</h1>
        </header>
    </section>
    <section role="region" aria-labelledby="eg3">
         <header>
            <h1 id="eg3">Example 3</h1>
         </header>
    </section>