<http://schema.org/description>
"At this point, most SEOs and Webmasters would agree that Google Webmaster Tools is an invaluable resource for any web site on the internet.Even if you do not use it for submitting and tracking sitemap"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/y-combinator-google-webmaster-tools-15219.html>