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The singer Mohammed Reza Shajarian is one of Iran 's most celebrated classical singers , and he is joined on their third United States tour together by Hossein Alizadeh on tar -LRB- lute -RRB- and Kayhan Kalhor on kemancheh -LRB- spike fiddle -RRB- in new pieces rooted in the improvisations of Persian classical music and mystical Sufi poetry .
 nationality: Hossein Alizadeh, Iran; nationality: Kayhan Kalhor, Iran
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Hossein Alizadeh, Iran; Kayhan Kalhor, Iran 
Answer:
 nationality: Hossein Alizadeh, Iran; nationality: Kayhan Kalhor, Iran