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Deletion of this IC abolishes local paternally derived gene expression and results in Prader - Willi syndrome ( PWS ) .
 Disease: Prader - Willi syndrome; Disease: PWS
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: Prader - Willi syndrome; Disease: PWS