6618
A new QSAR model , for angiotensin I - converting enzyme inhibitory oligopeptides .
 Chemical: angiotensin I
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: angiotensin I 
Answer:
 Chemical: angiotensin I