<?xml version="1.0"?>
<sparql 
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:xs="http://www.w3.org/2001/XMLSchema#" 
    xmlns="http://www.w3.org/2005/sparql-results#">
    <head>
        <variable name="x"/>
        <variable name="y"/>
        <variable name="z"/>
    </head>
    <results>
        <result>
            <binding name="x">
                <uri>http://example/b</uri>
            </binding>
            <binding name="z">
                <uri>http://www.w3.org/1999/02/22-rdf-syntax-ns#Property</uri>
            </binding>            
        </result>
    </results>
</sparql>
