59730
He immediately went to Petrograd , whose leadership headed by Zinoviev he found demoralized , and organized its defense , sometimes personally stopping fleeing soldiers .
 location: Petrograd; person: Zinoviev
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: Petrograd, Zinoviev 
Answer:
 location: Petrograd; person: Zinoviev