<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://mac.h-cdn.co/assets/cm/14/50/5487d551bab5a_-_mcx-friday-work.jpg>
<http://www.marieclaire.com/career-advice/tips/a8454/science-reveals-fridays-are-unproductive/>