21910
For volatile compounds , 49 major components were identified , mostly comprising of alcohols , acids and esters .
 Chemical: alcohols; Chemical: esters
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: alcohols, esters 
Answer:
 Chemical: alcohols; Chemical: esters