5982
Instead of coal , electricity is generated by burning oil shale , with largest stations in Narva .
 location: Narva
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: Narva 
Answer:
 location: Narva