: /Horst%20Tower%201100http://semanticweb.org/campus-routing-ontology# Create a prefix for http://semanticweb.org/campus-routing-ontology# Hit Enter to save Double click to create a prefix | : hasRoomNumberhttp://semanticweb.org/campus-routing-ontology# Create a prefix for http://semanticweb.org/campus-routing-ontology# Hit Enter to save Double click to create a prefix | graph:LectureRoom |