<http://schema.org/keywords>
"Ratp"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.decision-achats.fr/thematique/decideurs-achats-1035/Breves/La-RATP-confie-son-budget-d-achat-d-espaces-a-ZenithOptimedia-26647.htm>