<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/50/480x640/54897a70622a3_-_rbk-healthy-smile-0412-4-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>