<http://schema.org/about>
"As a mammal that lays eggs, has a duck's bill, a beaver's tail, an otter's feet and a venomous spur on its foot (males only), the platypus is a one of a kind animal. I mean that literally: it is the only"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/the-platypus-faces-extinction-as-australia-heats-up.html>