In Knowledge Representation a class may have more than one immediate superclasses. This technique is known as multiple classification. For example, according to wikipedia’s definition, a motorized bicycle is a bicycle with an attached motor and transmission used either to power the vehicle unassisted, or to assist with pedaling. The motorized bicycle is in technical terms a true bicycle, albeit a power-assisted one. However, for purposes of governmental licensing and registration requirements, the type may be legally defined as a motor vehicle, motorcycle, moped, or a separate class of hybrid vehicle. Powered by a variety of engine types and designs, the motorized bicycle formed the prototype for what would later become the motorcycle.Following this definition we could define the class “motorized bikes” as a subclass of both Bicycles and Motorbikes. In this case the class "motorized bikes" would inherit the properties of both parent classes.