<http://schema.org/about>
"A very rare feather, the white-tipped tail feather of an extinct New Zealand bird called the huia, sold at auction last week for a whopping $5,880. The huia was last seen in 1907, which makes the tail feather understandably precious"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/natural-sciences/feather-of-extinct-bird-fetches-huge-price-at-auction.html>