<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/14/50/980x490/548a565377cbd_-_rbk-healthy-smile-0412-1-msc.jpg>
<http://www.redbookmag.com/body/health-fitness/advice/g1090/foods-for-healthy-teeth/?link=rel&dom=yah_life&src=syn&con=blog_redbook&mag=rbk>