<http://schema.org/caption>
"This carbon nanotube sponge can hold more than 100 times its weight in oil, which can be squeezed out or burned off, and the sponge reused (Photo: Jeff Fitlow/Rice University)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://newatlas.com/oil-absorbing-nanosponge/22180/>