test/threads/acb.xml - third_party/libxml2 - Git at Google

 <!DOCTYPE acb SYSTEM "http://example.org/acb.dtd">
 <acb>
   <a>Let's use predefined entities &amp; &lt; &gt;</a>
   <c/>
   <b>Let's use a DTD defined entity &bent;</b>
 </acb>
	<!DOCTYPE acb SYSTEM "http://example.org/acb.dtd">
	<acb>
	<a>Let's use predefined entities & < ></a>
	<c/>
	<b>Let's use a DTD defined entity &bent;</b>
	</acb>