58938
What has become the single richest diamond mine in the world opened in Jwaneng in 1982 .
 location: Jwaneng
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: Jwaneng 
Answer:
 location: Jwaneng