Approval.

backend/iw/event.json

@@ -92,6 +92,7 @@
         "check_already_special_relation": "is already related to the object through a time relation or an event!",
         "edit_event": "Edit the event",
         "clone_event": "Clone the event",
-        "gnd": "Gemeinsame Normdatei"
+        "gnd": "Gemeinsame Normdatei",
+        "recognized_uncertainty": "Recognized uncertainty"
     }
 }