<http://schema.org/description>
"A couple weeks ago, we reported how Google is showing longer answers for queries in the top of the search results.  Now, it seems Google is asking their searchers if they find those longer answers use"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-poll-searchers-long-answers-18098.html>