66358
The production of the second-most important isotope Bk involves the irradiation of the rare isotope Cm with high-energy alpha particles .
 location: Cm
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Cm 
Answer:
 location: Cm