<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54fe3980d7a97-heart-tests-cp.jpg>
<http://www.goodhousekeeping.com/health/a16983/life-saving-heart-tests-jan07/?src=shelter_footer>