error12.dtd



<!ELEMENT people (name*)>
<!ELEMENT name (westernName | easternName)>
<!ELEMENT westernName (first, middle?, last)>
<!ELEMENT easternName (sei, mei)>
<!ELEMENT first (#PCDATA)>
<!ELEMENT middle (#PCDATA)>
<!ELEMENT last (#PCDATA)>
<!ELEMENT sei (#PCDATA)>
<!ELEMENT mei (#PCDATA)>
<!ENTITY data SYSTEM "nodata">