Invocation Message. This is the full HTTP message sent to invoke the "hello world" service. It utilizes the HTTP POST method, and is sent to the service endpoint at http://sadiframework.org/examples/hello. The message body consists of an RDF/XML instance of the NamedIndividual class (as per the Hello service's hello.owl ontology), with the property "name" and a value of "Guy Incognito". The URI of this individual is http://sadiframework.org/examples/hello-input.rdf#1.