<http://schema.org/caption>
"The internal structure of cork (above) has inspired the creation of three-dimensional graphene blocks (Photo: &lt;a href=\"http://www.shutterstock.com/pic.mhtml?id=61074232\" target=\"_blank\"&gt;Shutterstock&lt;/a&gt;)"^^<http://www.w3.org/2001/XMLSchema#string>
<http://newatlas.com/3d-graphene-cork-blocks/25342/>