“RDF is an application of XML. It extends the XML model and syntax to be specific for describing resources. RDF utilises the Namespace facility of XML. The XML Namespace, which points to a URI, allows RDF to scope and uniquely identify a set of properties. This set of properties, called a schema, can be accessed at the URI identified by the namespace. Also, since RDF is based on XML, it inherits the language tag, thus enabling the support of multi-lingual metadata.”