Goguryeo language
The Goguryeo language , or Koguryoan , was the language of the ancient kingdom of Goguryeo ( 37 BCE – 668 CE ) , one of the Three Kingdoms of Korea . 
<triplet> Goguryeo language <subj> Goguryeo <obj> indigenous to <triplet> Goguryeo <subj> Three Kingdoms of Korea <obj> part of <triplet> Three Kingdoms of Korea <subj> Goguryeo <obj> named after