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Continuing the efforts of Guru Ramdass , Guru Arjan established Amritsar as a primary site for all Sikhs , and people on earth , as a center for great spiritual experience .
 Guru, Guru Arjan, Amritsar
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Guru, Guru Arjan, Amritsar