17491
Grape anthocyanin and skin tannin concentration increased as ripening progressed , while seed tannin declined .
 Chemical: anthocyanin; Chemical: tannin; Chemical: tannin
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: anthocyanin; Chemical: tannin; Chemical: tannin