<http://schema.org/keywords>
"POSTER WORK, billboard, announced, advertising signage, advertise, advertising, Werbeschilder, affichage publicitaire, sinaliza\u00E7\u00E3o de publicidade"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bibliocad.com/library/worksite-advertising-posters_64850>