<http://schema.org/description>
"Mister Rogers, Bob Ross, Carl Sagan and Bill Nye the Science Guy team up to form an &amp;quot;Avengers&amp;quot;-style, PBS superhero team in a new video from an outfit called Gritty Reboots. (YouTube video; 5/2/2013)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.post-gazette.com/video/?v=2347170215001>