319478
He appeared on stage with ABBA at the Eurovision Song Contest 1974 and played with them on their concert tours of Europe and Australia in 1977 , North America and Europe in 1979 and Japan in 1980 .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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