30073
The highly branched side chains and the phenolic acid residues of the arabinogalactan might be the functional sites .
 Chemical: phenolic acid
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: phenolic acid 
Answer:
 Chemical: phenolic acid