Hydra RDF

Hi all,
I may have missed it, but has anyone looked into Hydra RDF [1,2], a vocabulary to describe Web APIs?

[1] http://www.hydra-cg.com/spec/latest/core/
[2] http://www.markus-lanthaler.com/research/hydra-a-vocabulary-for-hypermedia-driven-web-apis.pdf

Cheers
D
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Daniel Schwabe                      Dept. de Informatica, PUC-Rio
Tel:+55-21-3527 1500 r. 4356        R. M. de S. Vicente, 225
Fax: +55-21-3527 1530               Rio de Janeiro, RJ 22453-900, Brasil
http://www.inf.puc-rio.br/~dschwabe