During the definition of Cultural-ON, an in depth discussion between the working group responsible for cultural linked open data, formed by the Ministry of Cultural Heritage and Activities (Service I) and the Institute of Cognitive Sciences and Technologies of the Council of Research (CNR) and the working group of the "Istituto beni artistici culturali e naturali" of Emilia Romagna Region, in order to contribute to the integration of the two ontologies, thus guaranteeing semantic interoperability.