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"This site provides a collection of schemas, i.e., html tags, that
webmasters can use to markup their pages in ways recognized by major
search providers. Search engines including Bing, Google and Yahoo!
rely on this markup to improve the display of search results, making
it easier for people to find the right web pages."

I couldn't find any type specific for datasets / resources, but maybe
some of the list could be adapted:
http://schema.org/docs/full.html


Adri=E0