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In June 2013 , Aaliyah was featured on a new track by Chris Brown , titled " Do n't Think They Know " ; with Aaliyah singing the song 's hook .
 person: Aaliyah; person: Chris Brown; person: Aaliyah
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:
 person: Aaliyah; person: Chris Brown; person: Aaliyah