<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/BreadcrumbList>
<http://www.discountfilterstore.com/filter-brands.html?flow_rate_range=0.5+-+1.0&micron_rating_nom=0.5&size_advertised=8+x+2-1%2F2>