6974
The optical absorption of Cm ions contains three sharp peaks at 375.4 , 381.2 and 396.5 nanometers and their strength can be directly converted into the concentration of the ions .
 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