<http://schema.org/about>
"Astronomers have gotten the first-ever peek at our solar system's tail, finding that it's shaped like a four-leaf clover"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/space/stories/our-solar-system-has-a-tail-and-its-shaped-like-a-4-leaf-clover>