955
Overall , the Germans were successful in establishing a secret radio communications network from their control station in Argentina , however , Argentine authorities arrested most of the German agents in mid-1944 , permanently ending Bolivar , after nearly four years in operation .
 location: Argentina
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: Argentina 
Answer:
 location: Argentina