Q: 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: Yoruba ("") is a language spoken in West Africa, mainly in Nigeria.
The number of speakers of Yoruba is approaching 30 million. It is a pluricentric language spoken principally in Benin and Nigeria, with communities in other parts of Africa, the Americas, and Europe. A variety of the language, Lucumi, is the liturgical language of the Santería religion of the Caribbean. Many Yoruba words are used in the Afro-Brazilian religion known as Candomblé. Yoruba is most closely related to the Itsekiri language (spoken in the Niger Delta) and to Igala (spoken in central Nigeria)., Obalokun was an Alaafin of Oyo , he was first in an era of successive despotic and short - lived kings of Oyo ., Yorubaland is the cultural region of the Yoruba people in West Africa. It spans the modern day countries of Nigeria, Togo and Benin, and covers a total land area of 142,114 km² or about the same size as the combined land areas of Greece and Montenegro, of which 106,016 km², representing about 74.6% within Nigeria, 18.9% in Benin, and the remaining 6.5% in Togo. The geocultural space contains an estimated 55 million people, the overwhelming majority of them are ethnic Yorubas.
About 5.3 million people are estimated to practice Yoruba religion worldwide with the largest numbers found in Nigeria., Alaafin, or "Man of the Palace" in the Yoruba language, was the title of the emperor of the medieval Oyo empire of northwestern Yorubaland. It was retained through the fall of that state as the official title of the ceremonial ruler of the contemporary Oyo clan., The Oyo Empire was a Yoruba empire of what is today Western and North central Nigeria, and Eastern Benin. Established in the 15th century, the Oyo Empire grew to become one of the largest West African states. It rose through the outstanding organizational skills of the Yoruba, wealth gained from trade and its powerful cavalry. The Oyo Empire was the most politically important state in the region from the mid-17th to the late 18th century, holding sway not only over most of the other kingdoms in Yorubaland, but also over nearby African states, notably the Fon Kingdom of Dahomey in the modern Republic of Benin to the west., An emperor (through Old French "empereor" from ) is a monarch, usually the sovereign ruler of an empire or another type of imperial realm. Empress, the female equivalent, may indicate an emperor's wife ("empress consort"), mother ("empress dowager"), or a woman who rules in her own right ("empress regnant"). Emperors are generally recognized to be of a higher honour and rank than kings. In Europe the title of Emperor was, since the Middle Ages, considered equal or almost equal in dignity to that of Pope, due to the latter's position as visible head of the Church and spiritual leader of Western Europe. The Emperor of Japan is the only currently reigning monarch whose title is translated into English as "Emperor"., Subject: obalokun, Relation: country_of_citizenship, Options: (A) japan (B) montenegro (C) niger (D) nigeria (E) realm
A:
nigeria