Teacher: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).
Teacher: Now, understand the problem? Solve this instance: Context: Bayan Railway Station ( Chinese :  ; pinyin : Byn Zhàn ) is a railway station on the Qinghai -- Tibet Railway . It serves Bayan and is located 77 km from Xining Railway Station ., Xining ("Xníng" ; "Ziling"; "Seleng") is the capital of Qinghai province in western China, and the largest city on the Tibetan Plateau. It has 2,208,708 inhabitants at the 2010 census whom 1,198,304 live in the built up area made of 4 urban districts., Tibet (Tibetan Pinyin: "boe", ; /i ts¹/) is a region on the Tibetan Plateau in Asia. It is the traditional homeland of the Tibetan people as well as some other ethnic groups such as Monpa, Qiang, and Lhoba peoples and is now also inhabited by considerable numbers of Han Chinese and Hui people. Tibet is the highest region on Earth, with an average elevation of . The highest elevation in Tibet is Mount Everest, Earth's highest mountain, rising 8,848 m (29,029 ft) above sea level., Xining railway station is the main railway station serving the city of Xining in Qinghai, China. It is the first station on the QinghaiTibet Railway which connects the city with Lhasa in Tibet., Lhasa is a city and administrative capital of the Tibet Autonomous Region of the People's Republic of China. The main urban area of Lhasa is roughly equivalent to the administrative borders of Chengguan District, which is part of the wider Lhasa prefecture-level city, an area formerly administered as a prefecture., Qinghai, formerly known in English as Kokonur, is a province of the People's Republic of China located in the northwest of the country. As one of the largest province-level administrative divisions of China by area, the province is ranked fourth-largest in size, but has the third-smallest population., China, officially the People's Republic of China (PRC), is a unitary sovereign state in East Asia. With a population of over 1.381 billion, it is the world's most populous country. The state is governed by the Communist Party of China, and its capital is Beijing. It exercises jurisdiction over 22 provinces, five autonomous regions, four direct-controlled municipalities (Beijing, Tianjin, Shanghai, and Chongqing), and two mostly self-governing special administrative regions (Hong Kong and Macau), and claims sovereignty over Taiwan. The country's major urban areas include Shanghai, Guangzhou, Beijing, Chongqing, Shenzhen, Tianjin and Hong Kong. China is a great power and a major regional power within Asia, and has been characterized as a potential superpower., The QinghaiTibet railway or Qingzang railway, is a high-elevation railway that connects Xining, Qinghai Province to Lhasa, Tibet Autonomous Region of China., Subject: bayan railway station, Relation: connecting_line, Options: (A) 1 (B) 2 (C) a (D) qingzang railway
Student:
qingzang railway