<http://schema.org/headline>
"Valve rolls out &amp;quot;Steam for Schools&amp;quot; to teach math and physics lessons with Portal 2"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.pcgamer.com/valve-rolls-out-steam-for-schools-to-teach-math-and-physics-lessons-with-portal-2/>