2992
8 % of northern Chinese and 27 % of Japanese PKU alleles , but it is rare in southern Chinese ( 2 . 2 % ) and is absent in the Caucasian population .
 Disease: PKU
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities: PKU 
Answer:
 Disease: PKU