<http://schema.org/description>
"Google seems to have released a new button found at the bottom of the SERPs page.  The new button is to the right of the normal \"search\" button but says \"search harder\".  I have not seen this myself, "^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/000818.html>