<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://rbk.h-cdn.co/assets/cm/14/49/640x480/547ef5d079038_-_pink-glasses-xlsynd.jpg>
<http://www.redbookmag.com/body/mental-health/how-to/a4845/be-an-optimist/>