4633
However , expression of sigma 3 from S4 ( 3 ' UTR / S1 ) , which included the PKR activator sequence from S1 within the 3 ' - UTR of S4 , was comparable to that from wild - type S4 .
 GENE: sigma 3; GENE: S4; GENE: 3 ' UTR / S1; GENE: PKR activator sequence; GENE: S1; GENE: 3 ' - UTR of S4; GENE: wild - type S4
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: sigma 3, S4, 3 ' UTR / S1, PKR activator sequence, S1, 3 ' - UTR of S4, wild - type S4 
Answer:
 GENE: sigma 3; GENE: S4; GENE: 3 ' UTR / S1; GENE: PKR activator sequence; GENE: S1; GENE: 3 ' - UTR of S4; GENE: wild - type S4