<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebSite>
<http://www.post-gazette.com/education/2013/06/15/In-Looser-Tone-Speakers-Urge-Graduates-to-Take-Risks-and-Be-Engaged/stories/201306150162>