70584
Cm and Es may still be usable as targets , allowing the production of isotopes with one or two more neutrons than known isotopes , though the production of several milligrams of these rare isotopes to create a target is difficult .
 location: Es
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: Es 
Answer:
 location: Es