Question: What is the name of this faction of the Marxist Russian Social Democratic Labour Party, which split from the Menshevik faction and who killed Alexander Bagration of Mukhrani?
Sentence (from "Alexander Bagration of Mukhrani"): Alexander Bagration of Mukhrani (Georgian: ალექსანდრე ბაგრატიონ-მუხრანელი , "Alek’sandre Bagration-Mukhraneli"; Russian: Александр Ираклиевич Багратион-Мухранский , "Aleksandr Iraklyevich Bagration-Mukhransky") (July 20, 1853 – October 30, 1918) was a Georgian nobleman, and head of the princely House of Mukhrani, a collateral branch of the former royal dynasty of Bagrationi and a descendant of Erekle II of Georgia, the penultimate king of Georgia.
Relevant evidence: Yes