7137
Two closely related variants of Stat5 , Stat5a and Stat5b , are encoded by distinct genes .
 GENE: Stat5; GENE: Stat5a; GENE: Stat5b
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: Stat5, Stat5a, Stat5b 
Answer:
 GENE: Stat5; GENE: Stat5a; GENE: Stat5b