SEO A list of photographers one photo plus caption ul or dl

Question

<ul>
<li title='John Doe'>
    <div class='item' id='123'>
        <span class='left'>John Doe</span>
        <span class='right'>USA</span>
    </div>
    <div class='expand'>
        <img class='photo' src='' alt='John Doe'/>
        <p>The caption</p>
    </div>
</li>
</ul>

This is the structure of a list of photographers with one photo and one caption each.
will the seo be better if I restructure it like this:
<dl>
<dt title='John Doe' id='123'>
    <span class='left'>John Doe</span>
    <span class='right'>USA</span>
</dt>
<dd>
    <img class='photo' src='' alt='John Doe'/>
    <p>The caption</p>
</dd>
</dl>

Answer 1

The best way is to restructure it like this :  

<dl>
<dt title='John Doe' id='123'>//id's can never be a number
    <span class='left'>John Doe</span>
    <span class='right'>USA</span>
</dt>
<dd>
  <figure>
    <img class='photo' src='' alt='John Doe'>// no closing slash needed
    <figcaption>The caption</figcaption>
  <figure>
</dd>
</dl>

As the semantics matter! I think this would be the best way to do it to take advantage of the seo and 100% semantics.