<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/10/160x213/54f5f2ff6fc3e_-_eat-right-to-stay-bright-mdn.jpg>
<http://www.womansday.com/health-fitness/wellness/g46/12-ways-to-keep-your-mind-sharp-1478/>