<my:test 
  xmlns:my="http://www.w3.org/XML/2008/xsdl-exx/ns1" 
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.w3.org/XML/2008/xsdl-exx/ns1 sgd2.xsd"
>
 <!--* If the schema is good, all of these will be bad *-->
 <my:ea>
  <my:a>An 'ea' element contains just an 'a', or nothing.</my:a>
  <my:a>Not two!</my:a>
 </my:ea>
 <my:ea>
  <my:a>An 'ea' element contains just an 'a', or nothing.</my:a>
  <my:b>Not a b!</my:b>
 </my:ea>
 <my:e0>
  <my:ea>An 'e0' element contains nothing, this ea is not allowed.</my:ea>
 </my:e0>
 <my:eb>
  <my:a>An 'eb' element contains just a 'b', or nothing.</my:a>
  <my:a>Not two.</my:a>
 </my:eb>
 <my:eb>
  <my:a>An 'eb' element contains just a 'b', or nothing.</my:a>
  <my:c>Not a 'c'.</my:c>
 </my:eb>
</my:test>