[Q]: Information: - Joseph Harold Greenberg (May 28, 1915 May 7, 2001) was an American linguist, principally known for his work in two areas, linguistic typology and the genetic classification of languages. - The Federal Republic of Nigeria , commonly referred to as Nigeria, is a federal republic in West Africa, bordering Benin in the west, Chad and Cameroon in the east, and Niger in the north. Its coast in the south lies on the Gulf of Guinea in the Atlantic Ocean. It comprises 36 states and the Federal Capital Territory, where the capital, Abuja is located. Its largest cities include: Lagos, Kano, Ibadan, Benin City and Port Harcourt. Nigeria is officially a democratic secular country. - The Lower Cross River languages form a branch of the Cross River languages of Rivers State , Nigeria . They consist of the divergent Obolo language ( or Andoni , 200,000 speakers ) , and the core of the branch , which includes the 4 million speakers of the Efik - Ibibio cluster . Obolo Lower Cross proper : Efik - Ibibio , Ibino ( Ibeno ) , Oro ( Oron ) , Okobo , Iko , Ebughu , Ilue , Enwang - Uda , Usaghade Forde and Jones ( 1950 ) considered Ibino and Oro to be Efik - Ibibio . - The Cross River or DeltaCross languages are a branch of the BenueCongo language family in south-easternmost Nigeria posited by Joseph Greenberg. It is one of the few of his branches of NigerCongo that has withstood the test of time. - Okrika is a port town in Rivers State, Nigeria, capital of the Local Government Area of the same name. The town is situated on a small island just south of Port Harcourt, making it a suburb of the much larger city. - Port Harcourt (Igbo: Igucha; Pidgin: "Po-ta-kot") is the capital and largest city of Rivers State, Nigeria. It lies along the Bonny River and is located in the Niger Delta. As of 2016, the Port Harcourt urban area has an estimated population of 1,865,000 inhabitants, up from 1,382,592 as of 2006. - Etche is a Local Government Area (LGA) in Rivers State, Nigeria, named after the Etche (Echie) people of Southern Nigeria. They also inhabit Omuma LGA; Etche/Omuma is a National Assembly constituency. - Rivers State, also known simply as Rivers, is one of the 36 states of Nigeria. According to census data released in 2006, the state has a population of 5,185,400, making it the sixth-most populous state in the country. Its capital, Port Harcourt is the largest city and is economically significant as the centre of Nigeria's oil industry. Rivers State is bounded on the South by the Atlantic Ocean, to the North by Imo, Abia and Anambra States, to the East by Akwa Ibom State and to the West by Bayelsa and Delta states. It is home to many indigenous ethnic groups: Ikwerre, Ibani, Opobo, Eleme, Okrika, and Kalabari, Etche, Ogba, Ogoni, Engenni, Obolo and others. The people from Rivers State are known as "Riverians". - The Atlantic Ocean is the second largest of the world's oceans with a total area of about . It covers approximately 20 percent of the Earth's surface and about 29 percent of its water surface area. It separates the "Old World" from the "New World". Given the paragraphs above, decide what entity has the relation 'instance of' with 'language family'.
****
[A]: lower cross river languages

Problem: Information: - The Soviet Union, officially the Union of Soviet Socialist Republics (USSR " ) was a socialist state in Eurasia that existed from 1922 to 1991. A union of multiple subnational republics, its government and economy were highly centralized. The Soviet Union was a one-party federation, governed by the Communist Party with Moscow as its capital. - The Commonwealth of Independent States ( CIS ; Russian : , , tr. Sodruzhestvo Nezavisimykh Gosudarstv , SNG ; also called the Russian Commonwealth ) is a regional organisation formed during the breakup of the Soviet Union , whose participating countries are some former Soviet Republics . The CIS is a loose association of states . Although the CIS has few supranational powers , it is aimed at being more than a purely symbolic organisation , nominally possessing coordinating powers in the realm of trade , finance , lawmaking , and security . It has also promoted cooperation on cross-border crime prevention . Furthermore , eight of the nine CIS member states participate in the CIS Free Trade Area , and five of these form the Eurasian Economic Union , a customs union and single market of over 180 million people . In addition , six member states participate in a mutual defence alliance : the Collective Security Treaty Organization . - Eurasia is the combined continental landmass of Europe and Asia. The term is a portmanteau of its constituent continents. Located primarily in the Northern and Eastern Hemispheres, it is bordered by the Atlantic Ocean to the west, the Pacific Ocean to the east, the Arctic Ocean to the north, and by Africa, the Mediterranean Sea, and the Indian Ocean to the south. The division between Europe and Asia as two different continents is a historical and cultural construct, with no clear physical separation between them; thus, in some parts of the world, Eurasia is recognized as the largest of five or six continents. In geology, Eurasia is often considered as a single rigid megablock. However, the rigidity of Eurasia is debated based on the paleomagnet data. - A member state is a state that is a member of an international organization or of a federation or confederation. - Moscow (or ) is the capital and most populous city of Russia, with 12.2 million residents within the city limits and 16.8 million within the urban area. Moscow has the status of a Russian federal city. Given the paragraphs above, decide what entity has the relation 'instance of' with 'international organization'.

A:
commonwealth of independent states