14979
NATO releases Serb police , crisis easing - NATO .
 else: Serb; organization: NATO; organization: NATO
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
 Entities: Serb, NATO, NATO 
Answer:
 else: Serb; organization: NATO; organization: NATO