Donors/charities matching use case

An idea that came up in conversation with the wife - apparently there 
are directories of  orgs from which grants are available, maybe 
foundations/philanthropists. There are also plenty of charities around. 
too. But it seems likely that there will be sets of criteria for which 
charities are suitable - e.g. "medical research but no animal experiments".
First pass this looks like a place where ontology + logic could be 
applied pretty directly. Does that sound reasonable? Has anything been 
done along these lines already?

Cheers,
Danny.

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