23392
There are 24 isotopes of neptunium with mass numbers of 219 , 220 , and 223 – 244 ; Np ( t = 2.20 years ) and short-lived Np , Np ( t ~ 2 days ) .
 location: Np
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: Np 
Answer:
 location: Np