: RuleTypehttp://qudt.org/schema/qudt/ Create a prefix for http://qudt.org/schema/qudt/ Hit Enter to save Double click to create a prefix | rdfs:isDefinedBy | : qudthttp://qudt.org/2.1/schema/ Create a prefix for http://qudt.org/2.1/schema/ Hit Enter to save Double click to create a prefix | graph:default |