ibm28n04.xml

<?xml version="1.0" encoding='UTF-8'?>
<!DOCTYPE aniaml [
   <!ELEMENT animal ANY>
   <!ENTITY generalE "leopard">
   &generalE;
   <!ENTITY % parameterE "<!ELEMENT leopard EMPTY>">
   %parameterE;
] animal>
<!-- Wrong componet general entity reference occurs inside the DTD -->
<!-- General entity sould be used in the document content --> 
<animal>&generalE</animal>