<http://schema.org/vehicleEngine>
"Mercedes-Benz In-line 2.1L 161HP"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.rvusa.com/rvs-for-sale/2017/airstream-class-b-lounge-ext-class-b-new-los-banos-california-93635-1934546>