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 Caucasus Mountains are a mountain system in Eurasia between the Black Sea and the Caspian Sea in the Caucasus region., Imereti ( Georgian :  ) is a region in Georgia situated along the middle and upper reaches of the Rioni river . It consists of the following Georgian administrative - territorial units : Kutaisi ( city ) Baghdati region Vani region Zestafoni region Terjola region Samtredia region Sachkhere region Tqibuli region Chiatura region Tsqaltubo region Kharagauli region Khoni region Significant towns and regional centres include Samtredia , Chiatura ( manganese production centre ) , Tkibuli ( coal mining centre ) , Zestafoni ( known for metals production ) , Vani , Khoni , and Sachkhere . Traditionally , Imereti is an agricultural region , known for its mulberries and grapes . The 800,000 Imeretians speak a Georgian dialect ; they are one of the local culture - groups of the ethnically subdivided Georgian people . In late antiquity and early Middle Ages the ancient western Georgian kingdom of Egrisi existed on the territory of Imereti . Its king declared Christianity as an official religion of Egrisi in 523 AD . In 975 - 1466 Imereti was part of the united Georgian Kingdom . Since its disintegration in the 15th century , Imereti was an independent kingdom . In the 17th - 18th centuries the kingdom of Imereti suffered frequent invasions by the Turks and paid patronage to the Ottoman Empire until 1810 , when it was occupied and annexed by the Russian Empire . The last King of Imereti was Solomon II ( 1789 - 1810 ) . From 1918 -- 1921 , Imereti was part of the independent Democratic Republic of Georgia . Within the USSR , the region was part of the Transcaucasian SFSR from 1922 -- 1936 , and part of the Georgian SSR from 1936 -- 1991 . Since Georgian independence in 1991 , Imereti has been a region of Georgia with Kutaisi as the regional capital ., Racha (also Raha, , "Raa") is a highland area in western Georgia, located in the upper Rioni river valley and hemmed in by the Greater Caucasus mountains. Under Georgias current subdivision, Racha is included in the Racha-Lechkhumi and Kvemo Svaneti region (mkhare) as the municipalities of Oni and Ambrolauri., Kutaisi (; ancient names: "Aea"/"Aia", "Kotais", "Kutatisi", "Kutaïsi") is the legislative capital of Georgia, and its 3rd most populous city. Situated west of Tbilisi, it is the capital of the western region of Imereti., Poti (; Mingrelian: ; Laz: /Fai or /Pai) is a port city in Georgia, located on the eastern Black Sea coast in the region of Samegrelo-Zemo Svaneti in the west of the country. Built near the site of the ancient Greek colony of Phasis and deriving its name from the same, the city has become a major port city and industrial center since the early 20th century. It is also home to a main naval base and the headquarters of the Georgian navy. Adjacent to the Poti port area is the RAKIA owned Free Industrial Zone. Inaugurated in April 2008, it has registered a number of businesses, including those from Iranian businesspeople trying to evade sanctions against Iran., The Black Sea is a body of water between Eastern Europe and Western Asia, bounded by Bulgaria, Georgia, Romania, Russia, Turkey, and Ukraine. It is supplied by a number of major rivers, such as the Danube, Dnieper, Rioni, Southern Bug, and Dniester. The Black Sea has an area of (not including the Sea of Azov), a maximum depth of , and a volume of . It is constrained by the Pontic Mountains to the south and by the Caucasus Mountains to the east, and features a wide shelf to the northwest. The longest east-west extent is about ., The Kura is an east-flowing river south of the Greater Caucasus Mountains which drains the southern slopes of the Greater Caucasus east into the Caspian Sea. It also drains the north side of the Lesser Caucasus while its main tributary, the Aras drains the south side of those mountains. Starting in northeastern Turkey, it flows through Turkey to Georgia, then to Azerbaijan, where it receives the Aras as a right tributary, and enters the Caspian Sea. The total length of the river is ., Colchis ("Kolkheti"; Greek "Kolkhis") was an ancient kingdom and region on the coast of the Black Sea, centered in present-day western Georgia. It has been described in modern scholarship as "the earliest Georgian formation" which, along with the Kingdom of Iberia, would later contribute significantly to the development of the medieval Georgian statehood and the Georgian nation. Internationally, Colchis is perhaps best known for its role in Greek mythology, most notably as the destination of the Argonauts, as well as the home to Medea and the Golden fleece., The Rioni or Rion River ("Rioni", "Phasis") is the main river of western Georgia. It originates in the Caucasus Mountains, in the region of Racha and flows west to the Black Sea, entering it north of the city of Poti (near ancient Phasis). The city of Kutaisi, once the ancient city of Colchis, lies on its banks. It drains the western Transcaucasus into the Black Sea while its sister, the Kura River, drains the eastern Transcaucasus into the Caspian Sea., Subject: imereti, Relation: instance_of, Options: (A) area (B) argonauts (C) base (D) body of water (E) capital (F) century (G) city (H) coast (I) colony (J) formation (K) highland (L) home (M) mkhare (N) mountain (O) navy (P) port city (Q) region (R) river (S) role (T) scholarship (U) sea (V) side (W) subdivision (X) the city (Y) turkey (Z) valley ([) volume (\) water
mkhare