20598
Tyrosine in the pentapeptide RYGRK was covalently modified with soman simply by adding soman to the peptide .
 Chemical: Tyrosine; Chemical: pentapeptide; Chemical: soman; Chemical: soman
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Tyrosine; Chemical: pentapeptide; Chemical: soman; Chemical: soman