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Belgium was represented by Ann Christy , with the song ' " Gelukkig zijn " , at the 1975 Eurovision Song Contest , which took place on 22 March in Stockholm .
 Ann Christy, Stockholm
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ann Christy, Stockholm