<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/12/5508fe8f5bd3c-1211-woman-blowing-her-nose-xl.jpg>
<http://www.goodhousekeeping.com/health/advice/a18517/how-to-stay-healthy/>