Fix 'location of research' issues

[fjmanion]

The class 'location of research' seems like a defined class (equivalent to a site that is the location of some research process). It's subclasses then seem mislabeled, since 'conducted in camps' seems like a property of research rather than a kind of site. I would label them as 'camp', 'hospital', 'institution', etc, and place them under site, letting the reasoner infer that each is a location of research where appropriate.

Submitted by Neil Otte.