http://www.w3.org/1999/02/22-rdf-syntax-ns#_1 1 http://www.w3.org/1999/02/22-rdf-syntax-ns#_2 2 http://www.w3.org/1999/02/22-rdf-syntax-ns#_3 3 http://www.w3.org/1999/02/22-rdf-syntax-ns#_10 10