• ClioPatria is an extension of the SWI-Prolog RDF infratructure (`semweb' package) that provides you with a ready-to-run web-server that can be extended into a full-fledged Semantic Web application. The semweb package provides reading and writing RDF (XML and Turtle), storage and querying by means of rdf(Subject, Predicate, Object). ClioPatria adds the following: