diff --git a/rdf/tbox/filegraph/object-properties3.owl b/rdf/tbox/filegraph/object-properties3.owl
index 9016bea2..f4ea1be4 100644
--- a/rdf/tbox/filegraph/object-properties3.owl
+++ b/rdf/tbox/filegraph/object-properties3.owl
@@ -448,9 +448,19 @@
     <owl:ObjectProperty rdf:about="http://vivoweb.org/ontology/core#hasSubjectArea">
 
         <rdfs:subPropertyOf rdf:resource="http://vivoweb.org/ontology/core#hasAssociatedConcept"/>
+        <owl:inverseOf rdf:resource="http://vivoweb.org/ontology/core#subjectAreaOf"/>
     </owl:ObjectProperty>
     
 
+    <!-- http://vivoweb.org/ontology/core#hasSubjectArea -->
+
+    <owl:ObjectProperty rdf:about="http://vivoweb.org/ontology/core#subjectAreaOf">
+        <rdfs:subPropertyOf rdf:resource="http://vivoweb.org/ontology/core#conceptAssociatedWith"/>
+
+    </owl:ObjectProperty>
+    
+    
+
 
     <!-- http://vivoweb.org/ontology/core#hasSuccessorOrganization -->
 
diff --git a/rdf/tbox/firsttime/initialTBoxAnnotations.n3 b/rdf/tbox/firsttime/initialTBoxAnnotations.n3
index 36af8a0a..98a5b7cc 100644
--- a/rdf/tbox/firsttime/initialTBoxAnnotations.n3
+++ b/rdf/tbox/firsttime/initialTBoxAnnotations.n3
@@ -581,6 +581,23 @@ vivo:researchAreaOf
       vitro:selectFromExistingAnnot
               "true"^^xsd:boolean .
 
+vivo:subjectAreaOf
+      rdfs:label "subject area of"@en-US ;
+      vitro:displayLimitAnnot
+              "5"^^xsd:int ;
+      vitro:displayRankAnnot
+              "10"^^xsd:int ;
+      vitro:hiddenFromDisplayBelowRoleLevelAnnot
+              <http://vitro.mannlib.cornell.edu/ns/vitro/role#public> ;
+      vitro:inPropertyGroupAnnot
+              <http://vivoweb.org/ontology#vitroPropertyGroupoverview> ;
+      vitro:offerCreateNewOptionAnnot
+              "true"^^xsd:boolean ;
+      vitro:prohibitedFromUpdateBelowRoleLevelAnnot
+              <http://vitro.mannlib.cornell.edu/ns/vitro/role#public> ;
+      vitro:selectFromExistingAnnot
+              "true"^^xsd:boolean .
+
 geo:populationTotal
       rdfs:label "total population"@en-US ;
       vitro:hiddenFromDisplayBelowRoleLevelAnnot