8798
This study showed that beta - CDs were the most versatile CDs and that beta - CD polymers could perform the controlled release of aroma compounds .
 Chemical: beta - CDs; Chemical: beta - CD
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: beta - CDs; Chemical: beta - CD