<?xml version="1.0"?>
<sparql xmlns="http://www.w3.org/2005/sparql-results#">
  <head>
    <variable name="c"/>
  </head>
  <results>
    <result>
      <binding name="c">
        <literal datatype="http://www.w3.org/2001/XMLSchema#integer">2</literal>
      </binding>
    </result>
  </results>
</sparql>
