some questions about the ORG Ontology

Dear All,

I have some questions about the ORG Ontology:

Can Posts contain sub Organizational Units? This is currently allowed in the
ontology, but does not seem to make sense to me when I think of applications
and the intuitive connotation of Post. (I am still trying to make sense of
what are the benefits of Post being a subclass of Organization. The fact
that a Post can be held by multiple people does not seem to be enough, since
Post could also be a direct subclass of foaf:Agent, in which case it could
be a foaf:Group.)

What is the difference between hasSubOrganization - when used between
org:Organization and org:Post - and hasPost (which has ___domain Organization
and range Post)? If there is no difference (and if one insists that Post is
a subclass of Organization) shouldn't org:hasPost be a subproperty of
org:hasSubOrganization (just like  org:hasUnit is)?

If an agent is a member of a sub organization (O2), which is a sub
organization of an organization (O1), is the agent also a member of O1?

Suppose that we're talking about a particular University, e.g., "The Federal
University of Esp�rito Santo". Would we then have different Posts for each
of the "Associate Professors" that are members of the university?

Is organization (___domain org:Membership, range foaf:Agent) a functional
property? (I think so.)

Is organization (___domain org:Membership, range org:Organization) a functional
property? 

Is role (___domain org:Membership, range org:Role) a functional property?

regards,
Jo�o Paulo