xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:h="http:/www.cs.unibo.it/helm/schemas/schema-h.rdf#">
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:h="http:/www.cs.unibo.it/helm/schemas/schema-h.rdf#">