<http://schema.org/about>
"Old dogs may have a hard time learning new tricks -- but it doesn't seem to be a problem for a group of endangered trees from Canada, some of which are around 1,500 years old. In 2009, so many of Alberta's mountainous"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/endangered-trees-able-to-outsmart-hungry-squirrels.html>