The document discusses how AGROVOC, AGRIS, and the CIARD RING leverage RDF vocabularies and technologies to improve data interoperability. It provides examples of how AGRIS retrieves information on its centers through SPARQL queries of the RING, and how data in AGRIS is associated with RING URIs for centers to allow retrieving records by center. The RING is an openly accessible RDF store of datasets described using DCAT, accessible via its SPARQL endpoint.