60576
In 2010 , the island 's population was recorded at 497,973 , 83 % of whom were ethnic Russians , followed by about 30,000 Koreans ( 5.5 % ) .
 None
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:  
Answer:
 None