You will be given a definition of a task first, then some input of the task.
In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: 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 140 million 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., The Governing Senate ( ) was a legislative, judicial, and executive body of the Russian Emperors, instituted by Peter the Great to replace the Boyar Duma and lasted until the very end of the Russian Empire. It was chaired by the Procurator General, who served as the link between the sovereign and the Senate; he acted, in the emperor's own words, as "the sovereign's eye"., The Kremlin Senate is a building within the grounds of the Moscow Kremlin in Russia. Initially constructed from 1776 to 1787, it originally housed the Moscow branch of the Governing Senate, the highest judiciary and legislative office of Imperial Russia. Currently, it houses the Russian presidential administration and is a highly secured and restricted area closed to the public. At present, only the southern corner façade, opposite the Tsar Cannon can be viewed., Matvey Fyodorovich Kazakov ( Russian :    , 1738 -- 7 November 1812 ) was a Russian Neoclassical architect . Kazakov was one of the most influential Muscovite architects during the reign of Catherine II , completing numerous private residences , two royal palaces , two hospitals , Moscow University , and the Kremlin Senate . Most of his works were destroyed by the Fire of 1812 ; they were later rebuilt with various degrees of alteration ., Subject: matvey kazakov, Relation: country_of_citizenship, Options: (A) russia (B) russian empire
Output:
russian empire