<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ell.h-cdn.co/assets/cm/15/02/54abe19dac1f3_-_elle-13-exercises-try-skip-add-weight-7-v-elv.jpg>
<http://www.elle.com/beauty/health-fitness/advice/g8569/dangerous-exercises/>