<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/980x1429/54ff49f3af32f-06-ghk-beer-bottle-cap-s2.jpg>
<http://www.goodhousekeeping.com/health/g1092/ways-youre-ruining-your-teeth/?src=shelter_footer>