How to define a class Road to be equivalent to a set of objects with the same value of hasRoadNumber data property

问题

I defined class RoadSegment and datatype property hasRoadNumber. So, now I want to define class Road and state that a Road is a set of RoadSegments with the same road number. How it can be done?

来源：https://stackoverflow.com/questions/57937212/how-to-define-a-class-road-to-be-equivalent-to-a-set-of-objects-with-the-same-va