<http://schema.org/about>
"Living sculptures that defy gravity, that's how Yann Arthus-Bertrand describes trees in his inspiring environmental documentary Home, released on World Environment Day."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/culture/outdoor-atree-museuma-celebrates-a-community-centennialaand-trees.html>