Put area a, b withing the div with class=dialog
<div class="dialog">
<div class="a"></div>
<div class="b"></div>
**
</div>
Put blockquote at ** with attribute area="a"(or "b").
<blockquote>
<p area="a">FOO</p>
<p area="b">BAR</p>
<p area="a">BAZ</p>
</blockquote>