1<!ELEMENT employeeId (#PCDATA)> 2<!ELEMENT name (#PCDATA)> 3<!ELEMENT position (#PCDATA)> 4<!ELEMENT salary (#PCDATA)> 5<!ELEMENT address (#PCDATA)> 6<!ELEMENT entElement ( #PCDATA ) > 7<!ELEMENT gender ( #PCDATA | entElement )* > 8<!ELEMENT employee (employeeId, name, position, salary, gender, address) > 9<!ELEMENT staff (employee)+> 10<!ATTLIST entElement 11 attr1 CDATA "Attr"> 12<!ATTLIST address 13 domestic CDATA #IMPLIED 14 street CDATA "Yes"> 15<!ATTLIST entElement 16 domestic CDATA "MALE" > 17 18