<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://clv.h-cdn.co/assets/cm/15/09/480x552/54eb66a703dc5_-_idea-notebook-chalkboard-0313-xln.jpg>
<http://www.countryliving.com/home-design/decorating-ideas/advice/g1400/ideas-for-chalkboard-paint/>