<?xml version="1.0"?>
<!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
<catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
<delegateSystem systemIdStartString="http://example.org/a"
                catalog="a.example.org.xml"/>
<delegateSystem systemIdStartString="http://example.org/b"
                catalog="b.example.org.xml"/>
<nextCatalog catalog="c.example.org.xml"/>
</catalog>
