RDF model, ontology, CFL, Clausal formal logic, semantic web, knowledge base, OWL language.

An article tries to see a group of semantic web representation and communication means like description logics, semantic networks, RDF model and language, OWL language, RDF CFL etc. taking a part at the development of formal ontolo-gies from a slightly higher (meta)level. A focus has been oriented towards prop-erties that semantic web language ought to have to fulfill according to a semantic web idea. Consequently the article tries to draw by the help of the means above the trip towards a proper semantic-web ontology language fulfilling the main de-mands of expressivity and also easy-to-use conditions. Even if the development of a semantic web language was until now much more complicated with a taking part of a lot of people or companies the authors of the article try to contribute to an analyzing of the actual state by drawing it as a cloud of demands, streams, events or condition´s fulfilling that at the end would have brought into the world an easy-to-usable semantic web ontology language having all the demands ful-filled. The article moreover shows that a language RDF CFL belongs nowadays to the semantic web family as a unique well usable tool of reasoning within se-mantic web knowledge bases.