1149
Polyadenylation of B4 RNA , which occurs very early during maturation , is limited to 150 residues , and it is this number that is required for polysomal recruitment .
 GENE: B4 RNA
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: B4 RNA 
Answer:
 GENE: B4 RNA