<https://www.signatureheadstones.com/shop/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.signatureheadstones.com/product/24%E2%80%B3-x-12%E2%80%B3-x-3%E2%80%B3-flat-granite-headstone-2/>