bel="heading image heading" data-testname="heading name from content for each child including nested link using aria-labelledby with nested image" class="ex">
  heading
  <a href="#" aria-labelledby="nested_image_label1"><!-- should skip the other link text -->
    ignored link text
    <img id="nested_image_label1" alt="image" src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==">
    ignored link text
  </a>
  heading
</h3>

<h1>heading with two nested links referencing 