23942
Enantioselective Iron - Catalyzed Azidation of beta - Keto Esters and Oxindoles .
 Chemical: Iron; Chemical: beta - Keto Esters; Chemical: Oxindoles
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: Iron, beta - Keto Esters, Oxindoles 
Answer:
 Chemical: Iron; Chemical: beta - Keto Esters; Chemical: Oxindoles