1<?xml version="1.0"?> 2<sparql 3 xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 4 xmlns:xs="http://www.w3.org/2001/XMLSchema#" 5 xmlns="http://www.w3.org/2005/sparql-results#" > 6 <head> 7 <variable name="x"/> 8 <variable name="c"/> 9 </head> 10 <results> 11 <result> 12 <binding name="x"> 13 <uri>http://example.org/x/x</uri> 14 </binding> 15 <binding name="c"> 16 <uri>http://example.org/x/c</uri> 17 </binding> 18 </result> 19 <result> 20 <binding name="x"> 21 <uri>http://example.org/x/x</uri> 22 </binding> 23 <binding name="c"> 24 <uri>http://example.org/x/d</uri> 25 </binding> 26 </result> 27 </results> 28</sparql> 29