Figure out how the Controlled Vocabulary should integrate with the CIM

This page provides documentation for ticket:214.

(note: while I'm working I'll tag action items in bold)

This doesn't seem to be very urgent b/c the relationships in the controlled vocabulary will be implicit in the questionnaire; so all the data going into the CIM will necessarily be conformant.

I am initially thinking of using  Schematron. I suspect, though, that converting directly from  freemind to Schematron is a non-starter (freemind isn't rigorous enough). [Allyn]

todo: Look into the language presented by the Virtual Astronomy group at the M12 meeting