<http://schema.org/availability>
"http://schema.org/OutOfStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.pfister.ch/it/produktdetail/34571/Catalogo/Bambini-%26-ragazzi/Comodini-e-com%C3%B2/Panca-Romeo-%26-Juliet>