8923
The first example of Ir - catalyzed asymmetric substitution reaction with vinyl trifluoroborates is described .
 Chemical: Ir; Chemical: vinyl trifluoroborates
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: Ir, vinyl trifluoroborates 
Answer:
 Chemical: Ir; Chemical: vinyl trifluoroborates