4524
These results demonstrate that although PI2 and PI3 viruses belong to the same parainfluenza virus genus , these viruses show marked differences with respect to functional requirements for the cytoplasmic tail of the F glycoprotein .
 GENE: F glycoprotein
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: F glycoprotein 
Answer:
 GENE: F glycoprotein