<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/160x160/54cac56c87469_-_synthetic-blood-01-0511-mdn.jpg>
<http://www.popularmechanics.com/science/health/g553/5-synthetic-substitutes-for-real-blood/>