Propertychain. The property chain pattern enables connection between
individuals of two different classes by linking the classes via mediating classes, which are implemented as OWL allValuesFrom restrictions. Every mediator class is specifiedasasubclassofanOWLallValuesFromrestrictionthatindicatesthenextclassinthechainusing an OP.The linked class is also a subclass of an OWL allValuesFrom restriction. For instance,in an interior design system,aroom includes only objects, which are made of natural materials.