<http://schema.org/description>
"You can barely hear the birds chirping in this YouTube video of a man picking some fresh ingredients for a wild salad, and yet that very sound has been identified as copyrighted material, ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2012/02/27/a-copyright-claim-on-chirping-birds-highlights-the-flaws-of-youtubes-automated-system/>