Search Using Structured Data
Structured Data is information that is set out in a way which makes it easy for a search engine to read easily. Some examples include XML markup in XML sitemaps and schema vocabulary found in JSON-LD scripts.
A search engine that answers questions based upon crawling and indexing facts found within structured data on a site works differently than a search engine which looks at the words used in a query, and tries to return documents that contain the same words as the ones in the query; hoping that such a matching of strings might contain an actual answer to the informational need that inspired the query in the first place. Search using Structured Data works a little differently, as seen in this flowchart from a 2017 Google patent: