<http://schema.org/about>
"From balls of lightning and fiery tornadoes to red rain and frogs falling from the sky, the weather has often left scientists scratching their heads. Check out"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/wilderness-resources/photos/worlds-weirdest-weather/st-elmos-fire>