<element name=“ab:addressBook” xmlns:ab=“www.example.com/addressBook”
xmlns:a="http://www.example.com/address" xmlns="http://relaxng.org/ns/structure/1.0"> <zeroOrMore> <element name="ab:card"> <element name="a:name"> <text/> </element> <element name="a:email"> <text/> </element> </element> </zeroOrMore>
</element>