4745
The Stat5b mRNA has a size of 5 . 6 kb and encodes a protein of 786 amino acids .
 GENE: Stat5b mRNA
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: Stat5b mRNA 
Answer:
 GENE: Stat5b mRNA