diff --git a/src/cco-modules/ArtifactOntology.ttl b/src/cco-modules/ArtifactOntology.ttl
index aea3948..38e810b 100644
--- a/src/cco-modules/ArtifactOntology.ttl
+++ b/src/cco-modules/ArtifactOntology.ttl
@@ -19,14 +19,6 @@
                                                                                rdfs:label "Artifact Ontology"@en ;
                                                                                owl:versionInfo "Version 1.6"@en .
 
-#################################################################
-#    Annotation properties
-#################################################################
-
-###  http://purl.obolibrary.org/obo/IAO_0000116
-obo:IAO_0000116 rdf:type owl:AnnotationProperty .
-
-
 #################################################################
 #    Classes
 #################################################################
@@ -4466,7 +4458,6 @@ cco:TelecommunicationInstrument rdf:type owl:Class ;
 ###  http://www.ontologyrepository.com/CommonCoreOntologies/TelecommunicationNetwork
 cco:TelecommunicationNetwork rdf:type owl:Class ;
                              rdfs:subClassOf cco:CommunicationSystem ;
-                             obo:IAO_0000116 "How is this diff from Comm system?"@en ;
                              cco:definition "A Communication System that is designed to enable the transmission of information over significant distances between Telecommunication Endpoints via Telecommunication Network Nodes and Lines."@en ;
                              cco:definition_source "https://en.wikipedia.org/w/index.php?title=Telecommunications_network&oldid=1063347482"^^xsd:anyURI ;
                              cco:is_curated_in_ontology "http://www.ontologyrepository.com/CommonCoreOntologies/Mid/ArtifactOntology"^^xsd:anyURI ;