<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.pfister.ch/it/produktdetail/7354331/Catalogo/Tavola-%26-affini/Bicchieri-da-vino-%26-da-cocktail/Calice-da-vino-bianco-Lucy->