34819
Naturally occurring chromium is composed of three stable isotopes ; Cr , Cr and Cr , with Cr being the most abundant ( 83.789 % natural abundance ) .
 location: Cr; location: Cr; location: Cr; location: Cr
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: Cr, Cr, Cr, Cr 
Answer:
 location: Cr; location: Cr; location: Cr; location: Cr