<!-- 
http://www.w3.org/TR/xmldsig2ed-tests/#c14n11xmlbase-prop-1

Check that implementations of [XML-C14N1.1] work properly when the 
xml:base origin appears in the output document subset and also children 
with xml:base, which do not require further processing, are also present.
-->
<XPath xmlns:ietf="http://www.ietf.org" >
(//. | //@* | //namespace::*) 
[ancestor-or-self::ietf:c14n11XmlBaseDoc1 and not(ancestor-or-self::ietf:e2)]
</XPath>