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On 10 February 2001 , after being the number one album for eight non-consecutive weeks , " 1 " fell off to number four on the " Billboard " 200 with 173,500 units sold , a 19.5 % dip in sales , by the time this happened the album had sold almost six millions units .
 organization: Billboard
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Billboard