<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/768x516/54ebc2758554c_-_03-workers-coffee-break-xl.jpg>
<http://www.womansday.com/health-fitness/womens-health/advice/g1304/office-ergonomics/>