Question: What was Ignaz von Seyfried and Franz von Suppé's nationality?

full_context: Document 1: Sigmund Romberg: Sigmund Romberg (July 29, 1887 – November 9, 1951) was an Austro-Hungarian composer who spent most of his adult life in the United States. He is best known for his musicals and operettas, particularly "The Student Prince" (1924), "The Desert Song" (1926) and "The New Moon" (1928).
Document 2: List of compositions by Franz Schubert by genre: Franz Schubert (31 January 1797 – 19 November 1828) was an extremely prolific Austrian composer. He composed some 1500 works (or, when collections, cycles and variants are grouped, some thousand compositions). The largest group are the lieder for piano and solo voice (over six hundred), and nearly as many piano pieces. Schubert also composed some 150 part songs, some 40 liturgical compositions (including several masses) and around 20 stage works like operas and incidental music. His orchestral output includes a dozen symphonies (seven completed) and several overtures. Schubert's chamber music includes over 20 string quartets, and several quintets, trios and duos.
Document 3: Fritz Kreisler: Friedrich "Fritz" Kreisler (February2, 1875January29, 1962) was an Austrian-born violinist and composer. One of the most noted violin masters of his day, and regarded as one of the greatest violin masters of all time, he was known for his sweet tone and expressive phrasing. Like many great violinists of his generation, he produced a characteristic sound which was immediately recognizable as his own. Although it derived in many respects from the Franco-Belgian school, his style is nonetheless reminiscent of the "gemütlich" (cozy) lifestyle of pre-war Vienna.
Document 4: Antonio Salieri: Antonio Salieri (] ; 18 August 17507 May 1825) was an Italian classical composer, conductor, and teacher. He was born in Legnago, south of Verona, in the Republic of Venice, and spent his adult life and career as a subject of the Habsburg Monarchy.
Document 5: Leichte Kavallerie: Leichte Kavallerie ("Light Cavalry") is an operetta in two acts by Franz von Suppé, with a libretto by . It was first performed in the Carltheater, Vienna, on 21 March 1866.
Document 6: Jacques Offenbach: Jacques Offenbach (] ; ] ; 20 June 1819 – 5 October 1880) was a German-born French composer, cellist and impresario of the romantic period. He is remembered for his nearly 100 operettas of the 1850s–1870s and his uncompleted opera "The Tales of Hoffmann". He was a powerful influence on later composers of the operetta genre, particularly Johann Strauss, Jr. and Arthur Sullivan. His best-known works were continually revived during the 20th century, and many of his operettas continue to be staged in the 21st. "The Tales of Hoffman" remains part of the standard opera repertory.
Document 7: Franz von Suppé: Franz von Suppé or Francesco Suppé Demelli (18 April 181921 May 1895) was an Austrian composer of light operas and other theatre music. He came from the Kingdom of Dalmatia, Austro-Hungarian Empire (now part of Croatia). A composer and conductor of the Romantic period, he is notable for his four dozen operettas.
Document 8: Franz Xaver Wolfgang Mozart: Franz Xaver Wolfgang Mozart (26 July 1791 – 29 July 1844), also known as Wolfgang Amadeus Mozart, Jr., was the youngest child of six born to Wolfgang Amadeus Mozart and his wife Constanze. He was the younger of his parents' two surviving children. He was a composer, pianist, conductor, and teacher from the late classical period whose musical style was of an early Romanticism, heavily influenced by his father's mature style.
Document 9: Pique Dame (Suppé): Pique Dame ("The Queen of Spades") is an operetta in two acts by Franz von Suppé to a German-language libretto very loosely based on Alexander Pushkin's short story "The Queen of Spades". The author of the libretto is unknown. "Pique Dame" was a revised version of Suppé's 1862 operetta "Die Kartenschlägerin" ("The Fortune Teller") and premiered in June 1864 at the Thalia Theater in Graz. The work is primarily known today for its overture which remains a popular concert piece.
Document 10: Light Cavalry Overture: Light Cavalry Overture is the overture to Franz von Suppé’s operetta "Light Cavalry" (German: "Leichte Kavallerie"), premiered in Vienna in 1866. Although the operetta is rarely performed or recorded, the overture is one of Suppé's most popular compositions, and has achieved a quite distinct life of its own, divorced from the opera of which it originally formed a part. Many orchestras around the world have the piece in their repertoire, and the main theme of the overture has been quoted numerous times by musicians, cartoons and other media.
Document 11: Leopold Mozart: Johann Georg Leopold Mozart (November 14, 1719 – May 28, 1787) was a German composer, conductor, teacher, and violinist. Mozart is best known today as the father and teacher of Wolfgang Amadeus Mozart, and for his violin textbook "Versuch einer gründlichen Violinschule".
Document 12: Franz Schubert: Franz Peter Schubert (] ; 31 January 179719 November 1828) was an Austrian composer.
Document 13: Joseph Haydn: (Franz) Joseph Haydn ( ; ] ; 31 March 173231 May 1809) was an Austrian composer of the Classical period. He was instrumental in the development of chamber music such as the piano trio and his contributions to musical form have earned him the epithets "Father of the Symphony" and "Father of the String Quartet".
Document 14: Ignaz von Seyfried: Ignaz Joseph Ritter von Seyfried (15 August 1776 – 27 August 1841) was an Austrian musician, conductor and composer. He was born and died in Vienna. According to a statement in his handwritten memoirs he was a pupil of both Wolfgang Amadeus Mozart and Johann Albrechtsberger. He published Albrechtsberger's complete written works after his death. His own pupils included Franz von Suppé, Heinrich Wilhelm Ernst, Antonio Casimir Cartellieri, Joseph Fischhof and Eduard Marxsen.
Document 15: Wolfgang Amadeus Mozart: Wolfgang Amadeus Mozart ( ; ; ] ; 27 January 1756 – 5 December 1791), baptised as Johannes Chrysostomus Wolfgangus Theophilus Mozart, was a prolific and influential composer of the Classical era.
ground_truth: Austrian