74550
It 's a reference to the old World War I song , ' Pack up your troubles in your old kit bag , ' which is about smiling and whistling a happy tune as the Germans rain shells down on you . "
 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