17651
Fermented Rhus verniciflua stem bark ( FRVSB ) extract , an urushiol - free extract of Rhus verniciflua Stokes ( RVS ) fermented with Fomitella fraxinea , has various biological activities .
 Chemical: urushiol
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: urushiol 
Answer:
 Chemical: urushiol