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We report on 4 sibs ( 2F , 2M ) with Prader - Willi syndrome ( PWS ) .
 Disease: Prader - Willi syndrome; Disease: PWS
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: Prader - Willi syndrome, PWS 
Answer:
 Disease: Prader - Willi syndrome; Disease: PWS