<http://schema.org/description>
"Forget if PageRank is used or any of that.  Let's pretend PageRank is still a value that is meaningful.  Google uses the nofollow attribute within links to combat link spam and enable webmasters to te"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/001687.html>