<!--DTD generated by XML Spy v4.4 U (http://www.xmlspy.com)-->
<!ELEMENT Family (Parent+, Child+)>
<!ELEMENT Parent (Name)>
<!ATTLIST Parent
	type (father | mother) #REQUIRED
>
<!ELEMENT Child (Name)>
<!ATTLIST Child
	type (brother | sister) #REQUIRED
>
<!ELEMENT Name (#PCDATA)>