<?XML version="1.0"?>
<?namespace href = "http://www.ietf.org/standards/dav/" AS = "D"?>
<?namespace href = "http://www.w3.com/standards/z39.50/" AS = "Z"?>
<D:propertyupdate>
 <D:set>
      <D:prop>
	   <Z:authors>
		<Z:Author>Jim Whitehead</Z:Author>
		<Z:Author>Roy Fielding</Z:Author>
	   </Z:authors>
      </D:prop>
 </D:set>
 <D:remove>
      <D:prop><Z:Copyright-Owner/></D:prop>
 </D:remove>
</D:propertyupdate>