<http://schema.org/description>
"There are some products that are sold seasonally, some even for a very short period of time.  People who sell snow shovels normally sell it only for a few months.  People who sell school supplies norm"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/season-link-building-13234.html>