198863
International co-operation to promote collective security originated in the Concert of Europe that developed after the Napoleonic War in the nineteenth century in an attempt to maintain the status quo between European states and so avoid war .
 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