examples of how buildings look like regarding languages, several objects from this changeset:
https://www.openstreetmap.org/way/22997307#map=19/60.01381/30.40901 - https://yandex.ru/maps/-/CDQ5rL1f

https://www.openstreetmap.org/way/9895912 - https://szgmu.ru/rus/s/272/ - didn't find entrance but website is on Russian and has only english version

https://www.openstreetmap.org/way/23030826 - https://yandex.ru/maps/-/CDQ5v4kp (sign in Russian)

https://www.openstreetmap.org/node/518492980 - chain of pharmacies, website is in Russian only https://ozerki.ru/sankt-peterburg/. And the same is with all 2703 pharmacies which were "translated" in only this one changeset...