<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/54eb03c57a388_-_the-good-enough-guide-to-staying-healthy-mdn.jpg>
<http://www.womansday.com/health-fitness/a2557/the-good-enough-guide-to-staying-healthy-119345/>