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In the late 70s Astor enjoyed considerable chart and sales success with Kiss and Donna Summer who were both on the Casablanca label at the time .
 Astor, Donna Summer, Casablanca
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Astor, Donna Summer, Casablanca