The World Wide Web is the greatest repository of information ever assembled
by man. The web was not designed to be processed by machines. The web
information is meaningless for computer, and it is very hard to find out what you are
looking for. For this reason, it has new challenges a raise to build a Semantic Web
infrastructure where documents will be understandable by human and computers. The
knowledge creation and development of Semantic Web application has not yet been
In this paper Resources Description Framework (RDF) will be used as a
knowledge representation language which allows the representation of an Arabic
Sentence in Web environment to be annotated with semantics. And present formalism
for the language and discuss the features that make it well suited for the Arabic Web.