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Separated from Russia by the vast Kazakhstan steppe , straddled by mountains that stretch from Afghanistan 's Hindu Kush , all the way to China and the Himalayas , the region is home to the Silk Road cities of Samarkand , Tashkent , Dushanbe and Bukhara .
 location contains: Afghanistan, Hindu Kush
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
Answer:
 location contains: Afghanistan, Hindu Kush