<http://schema.org/alternativeHeadline>
"As another stormy spring approaches the Great Plains of North America, an impressive new time-lapse video reveals these atmospheric behemoths in action."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/climate-weather/blogs/time-lapse-video-brings-thunderstorms-to-life>