Please Be aware that isSemantic.net doesn't validate markup that contains other vocabularies besides Schema.org; this kind of markup is going to be revealed in Google defines rich snippets as “an Improved research outcome with added visual or interactive functions.” This displays queries like “How can I do know which kind https://addons.prestashop.com/en/seo-natural-search-engine-optimization/31857-automatic-google-rich-snippets-json-ld-open-graph-seo.html