<http://schema.org/description>
"An SEO Chat thread discusses the caching frequency of the MSN Search Engine.  Basically, how often does MSN re-cache your page in the index.  My corporate site was last cached by MSN on 6/4/2005, this"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/002076.html>