<http://schema.org/keywords>
"roof, covering, D\u00E4cher, Bel\u00E4ge, Toits, Couverture, Telhados, Coberturas, texture, textur, textura"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bibliocad.com/library/tiles_12357>