<http://schema.org/caption>
"There are many different kinds of winter storms. One is called an Alberta Clipper. Joe Calhoun explains what it is and how it got its name in this Classroom Weather segment."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.wgal.com/article/joe-knows-what-an-alberta-clipper-is----do-you/5782853>