<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/54fe28e13056e-memory-quiz-0809-s3.jpg>
<http://www.goodhousekeeping.com/health/wellness/advice/a12760/improve-your-memory/?src=shelter_footer>