<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Organization>
<http://www.discountfilterstore.com/whole-house-water-filtration.html?capacity_range=250+-+500&cat=408&micron_rating_nom=5&size_advertised=5+x+2-1%2F2>