<!DOCTYPE i:shelf SYSTEM "inventory-1.dtd" [
	<!ENTITY % Inventory.prefixed "INCLUDE">
	<!ENTITY % Inventory.prefix "i">
]>
<i:shelf xmlns:i="http://www.example.com/xmlns/inventory">
    <i:item>
        <i:desc>
          this is a description.
        </i:desc>
        <i:sku>
          this is the price.
        </i:sku>
        <i:price>
          this is the price.
        </i:price>
    </i:item>
</i:shelf>
