17193
Kale ( Brassica oleracea var . sabellica ) reveals a great diversity of flavonoids , which have been shown to be good antioxidants .
 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: flavonoids