1601
The biosynthesis of flavonoids and isoflavonoids is initiated by chalcones .
 Chemical: flavonoids; Chemical: isoflavonoids; Chemical: chalcones
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: flavonoids; Chemical: isoflavonoids; Chemical: chalcones