title: SDTT shows the 'Question', but not the 'Answer'
body: <p>For a FAQ, I try to combine HTML, WAI-ARIA and Microdata (using Schema.org), but the SDTT validation just shows the <code>Question</code>, not the <code>Answer</code>.</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;section class="accordion" role="tablist" aria-live="polite"&gt;
      &lt;details&gt;
          &lt;summary aria-controls="panel0" role="tab" itemprop="mainEntity" itemscope itemtype="https://schema.org/Question"&gt;
              &lt;p temprop="name"&gt;How to beat the boss...spoiler alert !&lt;/p&gt;
              &lt;meta itemprop="answerCount" content="1"/&gt;
          &lt;/summary&gt;
              &lt;div itemprop="acceptedAnswer" itemscope itemtype="https://schema.org/Answer"&gt;
                  &lt;p aria-labelledby="tab0" role="tabpanel" itemprop="text"&gt; Just aim to the red spots near his eyes Keep shooting at these spots until the eyes open, then hit quickly both eyes with your laser beam.&lt;/p&gt;
             &lt;/div&gt;
      &lt;/details&gt;
  &lt;/section&gt;
  </code></pre>