+ >-- DN.Mapping.VertexMapping.PumpSupplyOnAttribute --> L0.String <R L0.HasProperty
+ DN.Mapping.HasPropertyRelation DN.Vertex.HasPumpSupplyOn
+ >-- DN.Mapping.VertexMapping.PumpReturnOnAttribute --> L0.String <R L0.HasProperty
+ DN.Mapping.HasPropertyRelation DN.Vertex.HasPumpReturnOn
+ >-- DN.Mapping.VertexMapping.NominalDTAttribute --> L0.String <R L0.HasProperty
+ DN.Mapping.HasPropertyRelation DN.Vertex.HasNominalDT
+