In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: The was the historical Japanese nation-state and great power that existed from the Meiji Restoration in 1868 to the enactment of the 1947 constitution of modern Japan., The as part of the Supreme War Council was established in 1893 to coordinate efforts between the Imperial Japanese Army and Imperial Japanese Navy during wartime. In terms of function, it was approximately equivalent to the United States Joint Chiefs of Staff and the British Chiefs of Staff Committee., The 6th Division ( 6 Dairoku shidan ) was an infantry division in the Imperial Japanese Army . Its call sign was the Bright Division (  Akari - heidan ) ., The , literally "Army of the Greater Japanese Empire", was the official ground-based armed force of the Empire of Japan, from 1871 to 1945. It was controlled by the Imperial Japanese Army General Staff Office and the Ministry of War, both of which were nominally subordinate to the Emperor of Japan as supreme commander of the army and the navy. Later an Inspectorate General of Military (Army) Aviation became the third agency with oversight of the army. During wartime or national emergencies, the nominal command functions of the emperor would be centralized in an Imperial General Headquarters (IGHQ), an ad-hoc body consisting of the chief and vice chief of the Army General Staff, the minister of war, the chief and vice chief of the Naval General Staff, the inspector general of military aviation, and the inspector general of military training., The Emperor of Japan is the head of the Imperial Family and is the ceremonial head of state of Japan's system of constitutional monarchy. According to the 1947 constitution, he is "the symbol of the State and of the unity of the people." Historically, he is also the highest authority of the Shinto religion as he and his family are said to be the direct descendants of the sun-goddess Amaterasu, and his importance also lies in dealing with heavenly affairs, including Shinto ritual and rites throughout the nation., Subject: 6th division , Relation: country, Options: (A) empire of japan (B) japan (C) united states
empire of japan