<http://schema.org/description>
"A Bing Community thread has Bing's program manager, Brett Yount confirming that Bing prefers hyphens in the URLs as a word separator.He said:Hyphens are the preferred character for separating two word"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/archives/021955.html>