<grammar xmlns=“relaxng.org/ns/structure/1.0”>
<start> <element> <anyName> <except> <nsName ns="http://bar.com/"/> <nsName ns="http://foo.com/"/> </except> </anyName> <empty/> </element> </start>
</grammar>
<grammar xmlns=“relaxng.org/ns/structure/1.0”>
<start> <element> <anyName> <except> <nsName ns="http://bar.com/"/> <nsName ns="http://foo.com/"/> </except> </anyName> <empty/> </element> </start>
</grammar>