3294
Herbacetin ( HER ) is a natural flavonoid compound that can be extracted from Ramose Scouring Rush Herb , and its biological and pharmacological activities lack of corresponding attention .
 Chemical: Herbacetin; Chemical: HER; Chemical: flavonoid
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: Herbacetin, HER, flavonoid 
Answer:
 Chemical: Herbacetin; Chemical: HER; Chemical: flavonoid