Web Languages for Machine Interpretation XML(Extensible Markup Language): Semiformal documents range between non-formatted texts and fully formatted databases RDF (Resource description Framework Structured metadata describe arbitrary heterogeneous Web pages objects in a homogeneous manner Machines(e. g. search engines) can analyze XML or RDF markups better than full HTMLLanguages for Semantic Web 5 Web Languages for Machine Interpretation • XML (Extensible Markup Language): Semiformal documents range between non-formatted texts and fully formatted databases • RDF (Resource Description Framework): Structured metadata describe arbitrary heterogeneousWeb pages/objects in a homogeneous manner. Machines (e.g. search engines) can analyze XML or RDF markups better than full HTML