<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://cos.h-cdn.co/assets/cm/14/25/539fd994a4e0d_-_cos-01-woman-on-exercise-ball-md.jpg>
<http://www.cosmopolitan.com/health-fitness/advice/g3051/pelvic-floor-exercises/>