<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cac0e007aba_-_rf_interference_0311-de.jpg>
<http://www.popularmechanics.com/technology/gadgets/how-to/a11792/how-to-fight-rf-interference-with-your-gadgets/>