Question: Which Russian linguist was a member of the Kazan School?

full_context: Document 1: Copenhagen School (linguistics): The Copenhagen School, officially the Linguistic Circle of Copenhagen (French: "Cercle Linguistique de Copenhague"), is a group of scholars dedicated to the study of linguistics. It was founded by Louis Hjelmslev (1899–1965) and Viggo Brøndal (1887–1942). In the mid twentieth century the Copenhagen school was one of the most important centres of linguistic structuralism together with the Geneva School and the Prague School. In the late 20th and early 21st century the Copenhagen school has turned from a purely structural approach to linguistics to a functionalist one, Danish functional grammar, which nonetheless incorporates many insights from the founders.
Document 2: Yuriy Trubetskoy: Yuriy Trubetskoy ("Jurij Trubetsky", "Jerzy Trubecki", "Jurij Trubiacki", "Юрий Петрович Трубецкий ", "Юрій Петрович Трубецький ", "Juri Petrovitz Troebieskoy"; ca 1643 – 12 July 1679 buried in Troitsky monastery) was a Ruthenian Prince, boyar of the Trubetsky family. In 1657, Prince Jurij Trubetsky went to Moscow with his uncle Aleksandr Yurievitch Trubetzkoy (? - Poland after 1657). Stolnik in Moscow in 1660, he was given a boyar title by Tsar Alexis I of Russia in 1673. In the late 17th century, the weakened Republic of Both Nations under King Jan III Sobieski in alliance with the forces of Leopold I, Holy Roman Emperor, dealt the crushing defeats to the Ottoman Empire; Jerzy Trubecki was the Polish wojewoda of Kiev Voivodeship, 1673. He hold the scepter at the coronation of Fedor Alexeevitch in 1676.
Document 3: Mykola Leontovych: Leontovych was born and raised in the Podolia Governorate of the Russian Empire (present-day Ukraine). He was educated as a priest in the Kamianets-Podilskyi Theological Seminary and later furthered his musical education at the Saint Petersburg Court Capella and private lessons with Boleslav Yavorsky. With the independence of the Ukrainian state in the 1917 revolution, Leontovych moved to Kiev where he worked at the Kiev Conservatory and the Mykola Lysenko Institute of Music and Drama. He is recognized for composing "Shchedryk" in 1904 (which premiered in 1916), known to the English-speaking world as "Carol of the Bells" or "Ring, Christmas Bells". He is known as a martyr in the Eastern Orthodox Ukrainian Church, where he is also remembered for his liturgy, the first liturgy composed in the vernacular, specifically in the modern Ukrainian language. He was assassinated by a Soviet agent in 1921.
Document 4: Nikolay Brusentsov: Nikolay Petrovich Brusentsov (Russian: Никола́й Петро́вич Брусенцо́в ; 7 February 1925 in Kamenskoe, Ukrainian SSR – 4 December 2014) was a Russian computer scientist, most famous for having built a (balanced) ternary computer, Setun, together with Sergei Sobolev in 1958.
Document 5: Mikołaj Kruszewski: Mikołaj Habdank Kruszewski, (Russianized, "Nikolay Vyacheslavovich Krushevsky", Никола́й Вячесла́вович Круше́вский) (December 18, 1851, Lutsk – November 12, 1887, Kazan) was a Polish linguist, most significant as the co-inventor of the concept of phonemes, and relative of Anya Lucia Kruszewski. From 1883, he was a professor at Kazan University. His notable works include "On Sound Alternation" (1881) and "Outline of Linguistic Science" (1883). The former is actually the introduction to his master's thesis on morphophonemic alternation in Old Slavic (the section focusing on the theoretical background for the empirical work in the body of the thesis) and the latter is his doctoral thesis.
Document 6: Nikolai Trubetzkoy: Prince Nikolai Sergeyevich Trubetzkoy (also Troubetskoy; Russian: Никола́й Серге́евич Трубецко́й; Moscow, April 16, 1890 – Vienna, June 25, 1938) was a Russian linguist and historian whose teachings formed a nucleus of the Prague School of structural linguistics. He is widely considered to be the founder of morphophonology. He was also associated with the Russian Eurasianists.
Document 7: Leonid Murzin: Leonid Nikolayevich Murzin (Russian: Леони́д Николáевич Мурзи́н , ] ) was a Soviet and Russian linguist, the Dean of philological faculty at Perm State University (1964 - 1967), the founder and the head of General and Slavonic linguistics department at Perm State University; the head of Perm derivatology school; he founded the Institute of dynamic linguistics. Perm deivatology school encouraged the development of such linguistic school as "Computer based simulation of verbal communication"
Document 8: Nikolay Yegorovich Zhukovsky: Prof Nikolay Yegorovich Zhukovsky (Russian: Никола́й Его́рович Жуко́вский ; January 17 [O.S. January 5] 1847  – March 17, 1921) was a Russian scientist, mathematician and engineer, and a founding father of modern aero- and hydrodynamics. Whereas contemporary scientists scoffed at the idea of human flight, Zhukovsky was the first to undertake the study of airflow. He is often called the Father of Russian Aviation.
Document 9: Uzbekistan State University of World Languages: Uzbekistan State University of World Languages (USUWL) (Uzbek: "O'zbek Davlat Jahon Tillari Universiteti, Узбек Давлат Жахон Тиллари Университети" Russian: Узбекский государственный университет мировых языков ) is one of the leading universities in Tashkent city and in Uzbekistan. The Importance of language is essential to every aspect and interaction in the modern world. Language is the most important tool in contributing the knowledge and information among people and countries. Therefore, the world needs highly trained professionals, who mastered different languages, which would lead to the development of any country. "Uzbekistan State University of World Languages" has set the goals of upbringing highly trained philologist, and cover the demands for the professionals on philology field. "Uzbekistan State University of World Languages" was first established by the Decree of President of Republic of Uzbekistan Islam Karimov in the year of 1992 on 12 May, number 401 under the base of "Republican Russian language and literature pedagogics Institute" and "Tashkent state foreign languages pedagogics institute". In recent years, the "Uzbekistan State University of World Languages" has become the best language teaching university of Uzbekistan and there are more than 15 languages which are taught at the ""Uzbekistan State University of World Languages", which are: English, German, French, Spanish, Chinese, Russian, Arabic, Italian, Korean, Japanese, Iranian, Malaysian, Polish, Indian, Turkish, Greek and Indonesian. There are 8 faculties which give lessons in different subjects of philology.
Document 10: Johanna Nichols: Johanna Nichols is a professor emerita Linguist in the Department of Slavic Languages and Literatures at the University of California, Berkeley. Her research interests include the Slavic languages, the linguistic prehistory of northern Eurasia, language typology, ancient linguistic prehistory, and languages of the Caucasus, chiefly Chechen and Ingush. Nichols's best known work, "Linguistic Diversity in Space and Time", won the Linguistic Society of America's Leonard Bloomfield Book Award for 1994.
Document 11: Ka Haka ‘Ula O Ke‘elikōlani, College of Hawaiian Language: Ka Haka ‘Ula O Ke‘elikōlani, College of Hawaiian Language
Document 12: Kazan school: Kazan School was an influential group of linguists in Kazan. The linguistic circle included the Polish linguist Jan Baudouin de Courtenay and his student Nikolai Trubetzkoy.
Document 13: Jan Firbas: Jan Firbas (25 March 1921 in Brno – 5 May 2000 in Brno), was a Czech linguist and a prominent representative of the Prague School of linguistics. Born in Brno, in the Czech Republic, he studied English, German and philosophy at the Faculty of Arts of Masaryk University. From 1949 he was a member of the Department of English and American Studies of the faculty until his death in 2000. He became a member of the Prague Linguistics Circle, which was outlawed by the communist government. Persecution from the communist government and the fact that he came from an old Protestant family and refused to renounce his belief significantly delayed his academic career. Despite his international renown, it took him ten years to have his habilitation officially approved and he was only made Professor in 1990. In 1986, he was awarded Honorary Doctorates by the Universities of Leuven and Leeds, and in 2000 by the University of Turku. Even though he was frequently invited to give lecture series at universities across the globe in the 1970s and 80s, he could freely accept the invitations only after the fall of the communist regime in November 1989. Jan Firbas died on 5 May 2000 in Brno, the city where he had stayed for most of his life.
Document 14: Aleš Svoboda: Aleš Svoboda (2 April 1941 in Zlín – 9 January 2010 in Opava), was a Czech linguist and a prominent representative of the Prague School of linguistics. His early interests lead him to study music and clarinet play at Brno conservatoire, but later it was a keen interest in languages which brought him to study English, German and Czech at the Faculty of Arts of Masaryk University. In 1970 he became an Assistant Professor of the Department of English and American Studies at the faculty. He was promoted to the rank of Associate Professor at Charles University in Prague in 1981 and to Full Professor at Masaryk University in Brno in 1992. Apart from Masaryk University in Brno, he also taught at Silesian University in Opava and at the University of Ostrava (both in the Czech Republic), and at University of Prešov (Slovakia).
Document 15: Pyotr Ilyich Tchaikovsky and The Five: In mid- to late-19th-century Russia, Pyotr Ilyich Tchaikovsky and a group of composers known as The Five had differing opinions as to whether should be composed following Western or native practices. Tchaikovsky wanted to write professional compositions of such quality that they would stand up to Western scrutiny and thus transcend national barriers, yet remain distinctively Russian in melody, rhythm and other compositional characteristics. The Five, made up of composers Mily Balakirev, Alexander Borodin, César Cui, Modest Mussorgsky, and Nikolai Rimsky-Korsakov, sought to produce a specifically Russian kind of art music, rather than one that imitated older European music or relied on European-style conservatory training. While Tchaikovsky himself used folk songs in some of his works, for the most part he tried to follow Western practices of composition, especially in terms of tonality and tonal progression. Also, unlike Tchaikovsky, none of The Five were academically trained in composition; in fact, their leader, Balakirev, considered academicism a threat to musical imagination. Along with critic Vladimir Stasov, who supported The Five, Balakirev attacked relentlessly both the Saint Petersburg Conservatory, from which Tchaikovsky had graduated, and its founder Anton Rubinstein, orally and in print.
ground_truth: Nikolai Trubetzkoy