<http://schema.org/about>
"A quarter of the world's sharks and rays are at risk of extinction, according to a new assessment by the IUCN."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/animals/stories/sharks-and-rays-on-the-brink-25-at-risk-of-extinction>