WordNet: W3C:
http://www.w3.org/TR/wordnet-rdf/

==> wn20basic.zip, wn20full.zip

--------

http://wordnet.princeton.edu/~agraves/wordnet/0.9/

Compressed:
http://wordnet.princeton.edu/~agraves/wordnet/0.9/wordnetRDF.tar.gz

http://wordnet.princeton.edu/~agraves/wordnet/0.9/wordnetRDF.n3.zip

wordnet.nt.gz is the RDF/XML files converted to N-triples
There are more triples in this file than the N3 version.