<?xml version="1.0"?>
<sparql xmlns="http://www.w3.org/2005/sparql-results#">
    <head>
        <variable name="s"/>
        <variable name="o"/>
    </head>
    <results>
        <result>
            <binding name="s">
                <uri>http://example.org/od</uri>
            </binding>
            <binding name="o">
                <uri>http://example.org/sd</uri>
            </binding>
        </result>
    </results>
</sparql>