<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE endangered_species [
<!ELEMENT endangered_species (animal*)>
<!ELEMENT animal (name+, photo)>
<!ELEMENT name (#PCDATA) >
<!ATTLIST name language (English | Latin) #REQUIRED>
<!ENTITY tiger_pic SYSTEM "tiger.jpg" NDATA jpg>
<!NOTATION jpg SYSTEM "image/jpeg">
<!ELEMENT photo EMPTY>
<!ATTLIST photo source ENTITY #REQUIRED>
]>

<endangered_species>
<animal>
<name language="English">Tiger</name>
<!-- In your XML, use the name of the entity as the value of the attribute you defined. -->
<photo source="tiger_pic"/>
</animal>
</endangered_species>

