<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/AggregateOffer>
<http://www.pricegrabber.com/electronics/headphones-headsets++etymotic-research-ety-kids5-ek5-earphones-surround-glossy-black-mini-p/m-927888016/?ut=36a3c228e99082e6>