Default

This is a heading 2

<article>
<h2>This is a heading 2</h2>
</article>

article with aria-labelledby

This is a heading 2

<article aria-labelledby="article_heading">
<h2 id="article_heading">This is a heading 2</h2>
</article>

article with aria-label

This is a heading 2

<article aria-label="This is a heading 2">
<h2>This is a heading 2</h2>
</article>