Chartered to design “A Web ontology language, that builds on current Web languages that allow the specification of classes and subclasses, properties and subproperties (such as RDFS), but which extends these constructs to allow more complex relationships between entities including: - means to limit the properties of classes with respect to number and type, - means to infer that items with various properties are members of a particular class, - a well-defined model of property inheritance, and - similar semantic extensions to the base languages.”