25524
Chalcones , the biosynthetic precursors of flavonoids present in edible plants , exert cytotoxic and chemopreventive activities .
 Chemical: Chalcones; Chemical: flavonoids
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: Chalcones; Chemical: flavonoids