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Common grievances of these movements include the idea that Punjabis dominate Pakistan politically and economically , thus marginalizing other groups , and that the establishment of Urdu as the country 's sole official language is a form of cultural imperialism that ignores the heritage of Pakistan 's diverse peoples .
 Pakistan, Pakistan
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pakistan, Pakistan