<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://cos.h-cdn.co/assets/cm/14/25/539fd88a06741_-_cos-02-houseflies-mating-de.jpg>
<http://www.cosmopolitan.com/sex-love/advice/g2996/lessons-from-animal-mating/?src=global_footer>