<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.pfister.ch/fr/produktdetail/7908353/Catalogue/L%27art-de-la-table/Serviettes-%26-ronds-de-serviette/Serviettes-Paper-Products>