152319
The formal call for a conference of revolutionary socialist political parties and radical trade unions espousing revolutionary industrial unionism had been issued on January 24 , 1919 , with the gathering originally slated to commence in Moscow beginning on February 15 .
 location: Moscow
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: Moscow 
Answer:
 location: Moscow