Q:Information: - Russia (from the Rus'), also officially known as the Russian Federation, is a country in Eurasia. At , Russia is the largest country in the world by surface area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 140million people at the end of March 2016. The European western part of the country is much more populated and urbanised than the eastern, about 77% of the population live in European Russia. Russia's capital Moscow is one of the largest cities in the world, other major urban centers include Saint Petersburg, Novosibirsk, Yekaterinburg, Nizhny Novgorod and Samara. - Grand Duke Sergei Mikhailovich of Russia (7 October 1869 18 July 1918) was the fifth son and sixth child of Grand Duke Michael Nikolaievich of Russia and a first cousin of Alexander III of Russia. - Varvara Alexeyevna Yakovleva ( Russian : ; died July 18 , 1918 ) , called Nun Barbara , was a Russian Orthodox nun in the convent of Grand Duchess Elizabeth Fyodorovna . She was killed by the Bolsheviks along with the grand duchess and Prince Ioann Konstantinovich of Russia , Prince Konstantin Konstantinovich of Russia , Prince Igor Konstantinovich of Russia , Grand Duke Sergei Mikhailovich of Russia , Fyodor Remez , Grand Duke Sergei 's secretary , and Prince Vladimir Pavlovich Paley at Alapaevsk . She was later canonized as a martyr by both the Russian Orthodox Church Outside Russia and the Russian Orthodox Church within Russia . - Alexander III (1845 1894) was the Emperor of Russia, King of Poland, and Grand Duke of Finland from until his death on . He was highly conservative and reversed some of the liberal reforms of his father, Alexander II. During Alexander's reign Russia fought no major wars, for which he was styled "The Peacemaker". - The Bolsheviks, originally also Bolshevists or Bolsheviki (derived from "bol'shinstvo", "majority", literally meaning "one of the majority") were a faction of the Marxist Russian Social Democratic Labour Party (RSDLP) which split apart from the Menshevik faction at the Second Party Congress in 1903. The RSDLP was a revolutionary socialist political party formed in 1898 in Minsk(Belarus) to unite the various revolutionary organisations of the Russian Empire into one party. Given the paragraphs above, decide what entity has the relation 'date of death' with '18 july 1918'.
A:
barbara