3 <!ELEMENT a:outer (a:inner)>
4 <!ATTLIST a:outer xmlns:a CDATA #FIXED "urn:namespace">
5 <!ELEMENT a:inner EMPTY>
6 <!ATTLIST a:inner xmlns:a CDATA #FIXED "urn:namespace">
7 <!ATTLIST a:inner attr CDATA #FIXED "yes">
9 <a:outer xmlns:a="urn:namespace">