<http://schema.org/about>
"The 150-foot-wide asteroid 2012 DA14 may harbor $65 billion of recoverable water and $130 billion in metals."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/space/stories/earth-buzzing-asteroid-worth-195-billion-space-miners-say>