<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/640x430/54ebc27645e9d_-_04-woman-slouching-in-desk-xl.jpg>
<http://www.womansday.com/health-fitness/womens-health/advice/g1304/office-ergonomics/>