<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/49/547ef5d0310fa_-_lemon-juicer-xlsynd.jpg>
<http://www.redbookmag.com/body/mental-health/how-to/a4845/be-an-optimist/>