RDFa is another format used to embed rich metadata on web pages and documents. Let’s use Google’s handle being an example. We've very typically set up ids to solve duplicate entities, and it's enhanced rich snippets. e.g. price and review stars showing when they are defined in several scripts. Once https://addons.prestashop.com/ru/seo-natural-search-engine-optimization/31857--rich-snippets-json-ld-opengraph-seo.html