Annotations for object property assertions in Protege 4.0.

Hello,

I am having a problem when trying to define annotations for object 
property assertions (and some other axioms). I can't find a way to do it 
using Protégé 4.0. Does anyone know how to do this?

Looking at the specifications for OWL 2 
(http://www.w3.org/TR/2008/WD-owl2-syntax-20080411/), I see that a set 
of annotations can be defined for Axioms, and that 
ObjectPropertyAssertion is a subclass of Axiom. Is this specification 
not yet implemented by the new Protégé?

Has anyone faced this problem before?

In advanced thank you for your answer!

Best regards,

Alina Miron