Kharkhorin
Nearby are the ruins of the ancient town of Karakorum ( also known as Kharkhorum or Qara Qorum ) which , for a short time , served as the capital of the Mongol Empire under Ogedei Khan . 
<triplet> Karakorum <subj> Mongol Empire <obj> capital of <triplet> Mongol Empire <subj> Karakorum <obj> capital <subj> Ogedei Khan <obj> head of state