74003
Euro disco continued evolving within the broad mainstream pop music scene , even when disco 's popularity sharply declined in the United States , abandoned by major U.S. record labels and producers .
 United States, U.S.
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 United States, U.S.