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The 1983 Intercontinental Cup was a football match played on 11 December 1983 between Hamburg , winners of the 1982-83 European Cup , and Grêmio , winners of the 1983 Copa Libertadores .
 Hamburg, European Cup, Grêmio
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hamburg, European Cup, Grêmio