<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://clv.h-cdn.co/assets/cm/15/08/320x408/54ea32917addd_-_clx0306spcpjct006-de.jpg>
<http://www.countryliving.com/diy-crafts/how-to/g157/make-blackboard-0306/>