<http://schema.org/description>
"Moz on Google+ noticed a new search result format showing up in the search results for videos.  When you do a search that triggers videos, I think only from YouTube, Google may show a wide video embed"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-full-size-youtube-videos-18062.html>