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).
One example: Context: Joanne McLeod is a Canadian figure skating coach. She is the skating director at the Champs International Skating Centre of BC (formerly known as the BC Centre of Excellence). Here current and former students include Emanuel Sandhu, Mira Leung, Kevin Reynolds, Jeremy Ten, Nam Nguyen, and many others. In 2012, McLeod became the first level 5 certified figure skating coach in British Columbia., Victor Kraatz, MSC (born April 7, 1971) is a Canadian former ice dancer. In 2003, he and his partner, Shae-Lynn Bourne, became the first North American ice dancers to win a World Championship., Allie Hann-McCurdy (born May 23, 1987 in Nanaimo, British Columbia) is a Canadian ice dancer. McCurdy began skating at age eight and was a singles skater until age 12 when she switched to ice dancing. In 2003 she teamed up with Michael Coreno, with whom she was the 2010 Four Continents silver medalist and the 2008 Canadian bronze medalist. The pair retired in June 2010, to coach at the Gloucester Skating Club., Maikki Uotila - Kraatz ( born 25 February 1977 ) is a Finnish ice dancer . She is a former Finnish national champion with Toni Mattila . She married Victor Kraatz on June 19 , 2004 . The two coach in Vancouver , where they are the ice dancing directors at the BC Centre of Excellence . She and Kraatz have two sons , born September 14 , 2006 and July 10 , 2010 ., Burnaby is a city in British Columbia, Canada, located immediately to the east of Vancouver. It is the third-largest city in British Columbia by population, surpassed only by nearby Surrey and Vancouver., Canada (French: ) is a country in the northern half of North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering , making it the world's second-largest country by total area and the fourth-largest country by land area. Canada's border with the United States is the world's longest land border. The majority of the country has a cold or severely cold winter climate, but southerly areas are warm in summer. Canada is sparsely populated, the majority of its land territory being dominated by forest and tundra and the Rocky Mountains. About four-fifths of the country's population of 36 million people is urbanized and live near the southern border. Its capital is Ottawa, its largest city is Toronto; other major urban areas include Montreal, Vancouver, Calgary, Edmonton, Quebec City, Winnipeg and Hamilton., British Columbia (BC) is the westernmost province of Canada, with a population of more than four million people located between the Pacific Ocean and the Rocky Mountains. 
British Columbia is also a component of the Pacific Northwest and the Cascadia bioregion, along with the U.S. states of Idaho, Oregon, Washington and Alaska., The "Champs International Skating Centre of British Columbia" (formerly known as the 'BC Centre of Excellence') is one of two major figure skating training centers in Canada. Located in Burnaby, British Columbia, it is home to many great national and international skaters. The programs there are overseen by a staff, including Joanne McLeod, who coaches 3-time Canadian men's national champion Emanuel Sandhu; Bruno Marcotte, who competed at the 2002 Winter Olympics; Victor Kraatz, the 2003 World Champion in ice dancing, and Maikki Uotila, who was a national champion in Finland. The center operates out of Canlan Ice Sports Burnaby 8 Rinks. Notable skaters who train there include Emanuel Sandhu, Mira Leung, Allie Hann-McCurdy & Michael Coreno, Jessica Millar & Ian Moram, Jeremy Ten, and Kevin Reynolds. This skating school is sometimes known as a training site for international competitors to practice for competitions in Vancouver. Champs International hosts its annual competition known as the BC/YK SummerSkate Competition every August., Shae-Lynn Bourne, MSC (born January 24, 1976) is a Canadian ice dancer. In 2003, she and partner Victor Kraatz became the first North American ice dancers to win a World Championship. They competed at three Winter Olympic Games, placing 10th at the 1994 Winter Olympics, 4th at the 1998 Winter Olympics, and 4th at the 2002 Winter Olympics., Vancouver, officially the City of Vancouver, is a coastal seaport city on the mainland of British Columbia, Canada, and the most populous city in the province., Subject: maikki uotila, Relation: country_of_citizenship, Options: (A) american (B) british (C) canada (D) finland (E) montreal
Solution is here: finland
Explanation: This is a good example, as maikki uotila is citizen of the finland.

Now, solve this: Context: A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as stream, creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague., The Indus River, also called Darya-e-Sindh or Sindh River or Absn, is a major south-flowing river in South Asia. The total length of the river is which makes it one of the longest rivers in Asia. Originating in the western part of Tibet in the vicinity of Mount Kailash and Lake Manasarovar, the river runs a course through Ladakh, Gilgit-Baltistan, and Khyber Pakhtunkhwa, and then flows along the entire length of Punjab to merge into the Arabian Sea near the city of Thatta in Sindh. It is the longest river of Pakistan., Kabul (Pashto/) is the capital of Afghanistan as well as its largest city, located in the eastern section of the country. According to a 2015 estimate, the population of the city was around 3,678,033 which includes all the major ethnic groups. Rapid urbanization had made Kabul the world's 64th largest city and the fifth fastest-growing city in the world., Shahidan /  ( also Shaidan , Dari / Hazaragi language :  ) is located in Bamiyan. , about 260 km ( 160 mi ) northwest of Kabul and west of Bamiyan city , the provincial capital of Bamiyan Province . A large place between two famous mountain ranges Koh - i - Baba and Hindu Kush . Shahidan had a population of 25,500 . Also a large part of Shahidan people are as refugees outside the country , especially in Iran and Pakistan ., The Baba Mountain range ("Bâbâ ar"; "Koh-e Bâbâ") is the western extension of the Hindu Kush, and the origin of Afghanistan's Kabul, Helmand, Arghandab and the Hari River. The mountain range is crowned by Foladi peak ("Shah Fuladi") rising 4951 m; 16,244 ft. above sea level, and is located south of Bamyan, Afghanistan., Afghan (Pashto also Persian: ; see "etymology") refers to someone or something from Afghanistan, in particular a citizen of that country. Prior to the rise of the nation as Afghanistan, it was used by Persian speakers and those influenced by the Persian language to denote the Pashtun people. In modern times, "Afghan" is rarely used as an ethnic term for the Pashtuns, but is rather used as the national demonym for all citizens of Afghanistan  Pashtuns, Tajiks, and also a large number of Hazaras, Uzbeks, Aimaqs, Turkmens, Balochs, Nuristanis, Pashayis, Pamiris, Arabs, and others.
According to the "Encyclopædia Iranica", the word Afghan (afn) in current political usage means any citizen of Afghanistan, regardless of their tribal or religious affiliation. According to the 1964 Constitution of Afghanistan, all Afghans are equal in rights and obligations before the law. The fourth article of the current Constitution of Afghanistan states that citizens of Afghanistan consist of Pashtuns, Tajiks, Hazara, Uzbek, Turkmen, Aymaq, Arab, Baluch, Pashayi, Nuristani, Qezelbash, Gujjars, Brahui, and members of other tribes., Pakistan (or ), officially the Islamic Republic of Pakistan, is a federal parliamentary republic in South Asia on crossroads of Central Asia and Western Asia. It is the sixth-most populous country with a population exceeding 200 million people. It is the 36th largest country in the world in terms of area with an area covering . Pakistan has a coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by India to the east, Afghanistan to the west, Iran to the southwest and China in the far northeast respectively. It is separated from Tajikistan by Afghanistan's narrow Wakhan Corridor in the north, and also shares a maritime border with Oman., Urbanization refers to the population shift from rural to urban areas, "the gradual increase in the proportion of people living in urban areas", and the ways in which each society adapts to the change. It is predominantly the process by which towns and cities are formed and become larger as more people begin living and working in central areas. The United Nations projected that half of the world's population would live in urban areas at the end of 2008. It is predicted that by 2050 about 64% of the developing world and 86% of the developed world will be urbanized. That is equivalent to approximately 3 billion urbanites by 2050, much of which will occur in Africa and Asia. Notably, the United Nations has also recently projected that nearly all global population growth from 2016 to 2030 will be absorbed by cities, about 1.1 billion new urbanites over the next 14 years., Afghanistan (Pashto/Dari: , "Afnistn"), officially the Islamic Republic of Afghanistan, is a landlocked country located within South Asia and Central Asia. It has a population of approximately 32 million, making it the 42nd most populous country in the world. It is bordered by Pakistan in the south and east; Iran in the west; Turkmenistan, Uzbekistan, and Tajikistan in the north; and China in the far northeast. Its territory covers , making it the 41st largest country in the world., Pashto (; "Paxt" ), also known in older literature as Afghn or Pahn, is the South-Central Asian language of the Pashtuns. Its speakers are called Pashtuns or Pukhtuns and sometimes Afghans or Pathans. It is an Eastern Iranian language, belonging to the Indo-European family. Pashto is one of the two official languages of Afghanistan, and it is the second-largest regional language of Pakistan, mainly spoken in the west and northwest of the country. Pakistan's Federally Administered Tribal Areas (FATA) are almost 100% Pashto-speaking, while it is the majority language of the province of Khyber Pakhtunkhwa and the northern districts of Balochistan. Pashto is the main language among the Pashtun diaspora around the world. The total number of Pashto-speakers is estimated to be 4560 million people worldwide., The Amu Darya ('; /; //;  '), also called the Amu River and historically known by its Latin name, , is a major river in Central Asia. It is formed by the junction of the Vakhsh and Panj rivers, at Qal`eh-ye Panjeh in Afghanistan, and flows from there north-westwards into the southern remnants of the Aral Sea. In ancient times, the river was regarded as the boundary between Greater Iran and Turan., The Hindu Kush (Pashto, Persian and ), also known in Ancient Greek as the Caucasus Indicus or Paropamisadae, is an mountain range that stretches near the Afghan-Pakistan border, from central Afghanistan to northern Pakistan. It forms the western section of the "Hindu Kush Himalayan Region" ("HKH"). It divides the valley of the Amu Darya (the ancient "Oxus") to the north from the Indus River valley to the south., The Paropamisadae, also known by other names, were a people who lived in the area of Afghanistan and northern Pakistan during classical antiquity. The name was also used to refer to the lands these people inhabited, properly known as .
Name.
"Paropamisadae" is the latinized form of the Greek name "Paropamisádai", used to refer to the inhabitants of the land of "Paropamisus" ("Paropamisós") in the Hindu Kush. The name derived from the Old Persian "Para-upari-sena" ( "Beyond the Raised Land"), which properly referred to the Peshawar Valley on the other side of the mountains from Persia, with its major settlements at Peshawar and Charsadda in what is now Pakistan's Gandhara district., Subject: shahidan, Relation: country, Options: (A) afghanistan (B) india (C) iran (D) ladakh (E) pakistan (F) scotland (G) tajikistan (H) tibet (I) united states (J) world (K) worldwide
Solution:
afghanistan