<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.rvusa.com/rvs-for-sale/2017/coachmen-class-a-33bhp-bunk-house-rv-for-sale-at-mhsrvcom-wjacks-class-a-new-alvarado-texas-76009-1969247>