<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/BreadcrumbList>
<http://www.discountfilterstore.com/whole-house-air-filters.html?amp%3Bsize_advertised=17-1%2F2+x+27+x+5&brand=Air+Kontrol&life_months=6>