<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.pfister.ch/fr/produktdetail/7981587/Catalogue/L%27art-de-la-table/Couverts/Cuill%C3%A8re-%C3%A0-caf%C3%A9-Classic>