t with `role="article"`, either set the value of the `aria-labelledby` attribute of each article to the `id` value of any visible text that appropriately and uniquely describes that article's purpose;
 * **Or**, use the `aria-label` attribute to add an invisible, unique, non-empty label to each element with the `"article"` role.

For example:

```
<article aria-label="weather portlet">
    ...
</article>
    
<div role="article" aria-labelledby="t1">
    <h1 id="t1">Stock Ticker Portlet</h1">
    ...
</div>