Schema.org is a tree-like data model, which means that its conditions also have interactions among on their own as a result of hierarchy. This is termed course hierarchy Google can clearly show rich success or snippets for those who incorporate structured information to your site. Structured knowledge is a bit https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html