diff --git a/rdf/tbox/filegraph/object-properties.owl b/rdf/tbox/filegraph/object-properties.owl
index da959108..de3c61f0 100644
--- a/rdf/tbox/filegraph/object-properties.owl
+++ b/rdf/tbox/filegraph/object-properties.owl
@@ -1222,9 +1222,17 @@ there is a measurement process p that has specified output m, a measurement datu
     <!-- http://purl.org/ontology/bibo/translator -->
 
     <owl:ObjectProperty rdf:about="http://purl.org/ontology/bibo/translator">
-        <rdfs:domain rdf:resource="http://purl.org/ontology/bibo/Document"/>
+        <rdfs:domain>
+            <owl:Class>    
+                <owl:unionOf rdf:parseType="Collection">
+                    <owl:Class rdf:about="http://purl.org/ontology/bibo/Collection"/>
+                    <owl:Class rdf:about="http://purl.org/ontology/bibo/Document"/>
+               </owl:unionOf>
+            </owl:Class>    
+        </rdfs:domain>
         <rdfs:range rdf:resource="http://xmlns.com/foaf/0.1/Agent"/>
         <owl:inverseOf rdf:resource="http://vivoweb.org/ontology/core#translatorOf"/>
+        <rdfs:subPropertyOf rdf:resource="http://purl.org/dc/terms/contributor"/>
     </owl:ObjectProperty>
     
 
diff --git a/rdf/tbox/filegraph/object-properties3.owl b/rdf/tbox/filegraph/object-properties3.owl
index faaa8265..4be6864b 100644
--- a/rdf/tbox/filegraph/object-properties3.owl
+++ b/rdf/tbox/filegraph/object-properties3.owl
@@ -241,18 +241,7 @@
 
     <owl:ObjectProperty rdf:about="http://purl.org/ontology/bibo/translationOf">
 
-    </owl:ObjectProperty>
-    
-
-
-    <!-- http://purl.org/ontology/bibo/translator -->
-
-    <owl:ObjectProperty rdf:about="http://purl.org/ontology/bibo/translator">
-
-        <rdfs:subPropertyOf rdf:resource="http://purl.org/dc/terms/contributor"/>
-        <rdfs:domain rdf:resource="http://purl.obolibrary.org/obo/IAO_0000030"/>
-    </owl:ObjectProperty>
-    
+    </owl:ObjectProperty>    
 
 
     <!-- http://purl.org/spar/c4o/hasGlobalCitationFrequency -->