gugdrgogurio fu'ivla

x₁ is Korea.

In notes:

bangrxangu: x₁ is the Korean language used by x₂ to express/communicate x₃ (si'o/du'u, not quote).
gugdekupu: x₁ is the country with the code ISO-3166 KP (Korea, Democratic People'S Republic Of) for people x₂.
gugdekuru: x₁ is the country with the code ISO-3166 KR (Korea, Republic Of) for people x₂.
gugdrtcosena: x₁ is North Korea.
gugdrxanguke: x₁ is South Korea.