Question: Which ideologies helped formalize the ideas of the third member of the triumvirate, along side Zinoviev and Kamenev,. 
Sentence (from "Black &amp; White (book)"): The book is based on Naipaul's trip to Guyana in the aftermath of the Jonestown Massacre, and his subsequent trip to the United States, in which he explored links between the People's Temple and other groups and individuals.
Relevant evidence: No