"Wikidata is a free linked database that can be read and edited by both humans and machines. Wikidata acts as central storage for the structured data of its Wikimedia sister projects including Wikipedia, Wikivoyage, Wikisource, and others. Wikidata also provides support to many other sites and services beyond just Wikimedia projects! The content of Wikidata is available under a free license, exported using standard formats, and can be interlinked to other open data sets on the linked data web."

EMA Templates – Names of EU-EEA countries

"The EMA (European Medicines Agency) provides information on the linguistic aspects of the product information for a medicine, which includes the summary of product characteristics, labelling and package leaflet. It explains the content that should be included in these documents, as well as standard headings and the most commonly used standard statements and terms in all official European Union languages plus Icelandic and Norwegian, and defines the format and layout for the product information.

European Migration Network Glossary & Thesaurus

"The EMN Glossary improves comparability by enabling a common understanding and use of terms and definitions relating to asylum and migration. The Glossary draws on a variety of sources, but primarily on the legislation of the EU asylum and immigration acquis, and makes terms available in the majority of Member State languages."

CIDOC Conceptual Reference Model

"The CIDOC Conceptual Reference Model (CRM) provides definitions and a formal structure for describing the implicit and explicit concepts and relationships used in cultural heritage documentation. The CIDOC CRM is intended to promote a shared understanding of cultural heritage information by providing a common and extensible semantic framework that any cultural heritage information can be mapped to. It is intended to be a common language for domain experts and implementers to formulate requirements for information systems and to serve as a guide for good practice of conceptual modelling.