named exact types / schemas

Hi!

Apologies if this is somewhat un-informed.

I work for the not-for-profit social change charity Transition Town 
Movement <https://www.transitionnetwork.org/>. We want the capacity to 
search for:

    /type:{http://schema.org/Organisation} name:"Trasnition Town"/

and receive a distinct list of all Internet Transition Town websites.

However, the only RDF / Semantic search engine we can find is Glimmer 
<http://glimmer.research.yahoo.com/#%21index=wdc&query=type%3A%7Bhttp%3A%2F%2Fschema.org%2FOrganization%7D+%28predicate%3A%7Bhttp%3A%2F%2Fschema.org%2Fname%7D+%5E+object%3A%28Bedford+Transition+Town%29%29&deref=false&pageSize=10&pageStart=0>. 
And that carries out a *contains* search on properties. So 
/Organisation's /with /name/ "...blah ... Transition ... blah ... Town" 
will match. So could we create an NGO-subtype of TransitionTown? This 
would allow us to match directly on /type /only:

    /type:{http://schema.org////TrasnitionTown/}/

My initial investigation suggests this is wrong of course. Do you have 
any other suggestions that could help us?

Thanks,

-- 
Annesley Newholm
Skype:anewholm
Tel: +36 20 3463151 / +44 (0) 20 8133 5957

Note: I commonly use gender inspecific English Language extensions in my 
email: Per = hers/his, Pe = her/he: 
http://en.wikipedia.org/wiki/Gender-neutral_pronoun