Hi @artur_tomczak! This still doesn’t follow the Web Architecture principles about resource (entity/semantic) URLs.
Eg to fetch the classification “apple” in Polish (or English, or German) in Turtle, one should be able to use:
curl -L -Haccept-language:pl,en,de -Haccept:text/turtle \
https://identifier.buildingsmart.org/uri/bs-agri/fruitvegs-1.0/class/apple
See 4.6.3. Use Language Content Negotiation, and more details in its parent section 4.6. Improve Multilingual Support