Is there a bug tracking facility for the ontology? I am trying to get SPM to be OWL DL, which in turn depends on the core being OWL DL, but I run into various lint in the core. For example, Base.rdf is not valid RDF according to the w3 validator, even if the document is pasted into the validator. Thanks Bob -- Robert A. Morris Professor of Computer Science UMASS-Boston ram@cs.umb.edu http://bdei.cs.umb.edu/ http://www.cs.umb.edu/~ram http://www.cs.umb.edu/~ram/calendar.html phone (+1)617 287 6466