Using and masaging RDF triples

	* Namespaces

		+ Allow for beautifying namespaces

More about namespaces

	xmlns(rdf).
	xmlns(rdf, 'http://www.w3.org/1999/02/22-rdf-syntax-ns#').
	xmlns(rdf, 'http://www.w3.org/TR/REC-rdf-syntax').
	xmlns(rdf, 'http://www.w3.org/TR/1999/REC-rdf-syntax-19990222').

xml_namespace(Id, Namespace)
