<http://schema.org/keywords>
"AIRPORTS, airport, airfield, Flughafen, Flugplatz, l'a\u00E9roport, un a\u00E9rodrome, aeroporto"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.bibliocad.com/library/airport----piura,-peru_55968>