diff --git a/CSS-Ontology.owl b/CSS-Ontology.owl
index c23fe8b..51f927e 100644
--- a/CSS-Ontology.owl
+++ b/CSS-Ontology.owl
@@ -7,7 +7,7 @@
 @base <http://www.w3id.org/hsu-aut/css> .
 
 <http://www.w3id.org/hsu-aut/css> rdf:type owl:Ontology ;
-                                   owl:versionIRI <http://www.w3id.org/hsu-aut/css/1.0.0> ;
+                                   owl:versionIRI <http://www.w3id.org/hsu-aut/css/1.0.1> ;
                                    rdfs:comment "An ontology for the Capability, Skill and Service reference model defined by Plattform Industrie 4.0. See https://www.plattform-i40.de/IP/Redaktion/DE/Downloads/Publikation/CapabilitiesSkillsServices.html for a description of the abstract reference model." ;
                                    rdfs:isDefinedBy "https://www.plattform-i40.de/IP/Redaktion/DE/Downloads/Publikation/CapabilitiesSkillsServices.html" .
 
@@ -79,8 +79,24 @@
 
 ###  http://www.w3id.org/hsu-aut/css#isRealizedBy
 :isRealizedBy rdf:type owl:ObjectProperty ;
-              rdfs:domain :Property ;
-              rdfs:range :SkillParameter .
+              rdfs:domain :Capability ,
+                          :Property ;
+              rdfs:range :Skill ,
+                         :SkillParameter .
+
+
+###  http://www.w3id.org/hsu-aut/css#isRealizedBySkill
+:isRealizedBySkill rdf:type owl:ObjectProperty ;
+                   rdfs:subPropertyOf :isRealizedBy ;
+                   rdfs:domain :Capability ;
+                   rdfs:range :Skill .
+
+
+###  http://www.w3id.org/hsu-aut/css#isRealizedBySkillParameter
+:isRealizedBySkillParameter rdf:type owl:ObjectProperty ;
+                            rdfs:subPropertyOf :isRealizedBy ;
+                            rdfs:domain :Property ;
+                            rdfs:range :SkillParameter .
 
 
 ###  http://www.w3id.org/hsu-aut/css#isRestrictedBy