Action-164 suggestions (again) for unnamed individuals *in addition* to bnodes

Fulfilling action-164, Here is a pointer to the email when I first  
suggested we consider supporting both bnodes and unnamed (for the  
user) individuals.

http://lists.w3.org/Archives/Public/public-owl-wg/2007Nov/0214.html

Snippet, omitting unrelated, but not current suggestions.

It seems to me that we could actually support both.

> Individual(type(owl:Thing)) could be a skolem
> SomeIndividual(type(owl:Thing)) could be an existential.


That is, we could offer two forms of anonymous individual  
constructors. Neither would specify a name. One form of constructor  
would allocate a unique (to exceedingly high probability) name. The  
other would use a bnode, interpreted using the usual existential  
semantics.

Tree-shape restrictions would hold for the existentials, but not for  
the other kinds of anonymous individuals.

-Alan