--- a/server/src/app/Libraries/Mappers/CocoonContentRdfMapper.php	Wed Feb 03 00:40:35 2016 +0100
+++ b/server/src/app/Libraries/Mappers/CocoonContentRdfMapper.php	Wed Feb 03 18:34:44 2016 +0100
@@ -97,6 +97,10 @@
 
         $providedCHOResource = $outputGraph->resource($this->getResourceBaseId($res), 'edm:ProvidedCHO');
 
+        // add identifier
+        $resId = CocoonUtils::getIdFromUri($this->getResourceBaseId($res));
+        $providedCHOResource->add('http://purl.org/dc/terms/identifier', $resId);
+
         $this->addCHOResourceProperties($providedCHOResource, $res, $outputGraph);
 
         $this->addDateProperties($providedCHOResource, $res, $outputGraph);