Question: Tosca starred the tenor who was of what nationality?
Context: Plácido Domingo has made hundreds of opera performances, music albums, and concert recordings throughout his career as an operatic tenor.  From his first operatic leading role as Alfredo in "La traviata" in 1961, his major debuts continued in swift succession: "Tosca" at the Hamburg State Opera and "Don Carlos" at the Vienna State Opera in 1967; "Adriana Lecouvreur" at the Metropolitan Opera, "Turandot" in Verona Arena and "La bohème" in San Francisco in 1969; "La Gioconda" in 1970; "Tosca" in Royal Opera House, Covent Garden in 1971; "La bohème" at the Bavarian State Opera in 1972; "Il trovatore" at the Paris Opéra in 1973 and "Don Carlo" at the Salzburg Festival in 1975, "Parsifal" in 1992 at the Bayreuth Festival; and the list continues until today; the same role is often recorded more than once. Giancarlo Monsalve Leyton (born 4 March 1982) is a Chilean Spinto Tenor.  He is the Cultural Ambassador of Valparaíso UNESCO World Heritage.  He is known for his portrayal as Don José in "Carmen", Cavaradossi in "Tosca", Turiddu in "Cavalleria Rusticana", the title role in "Don Carlos", Riccardo in "Un Ballo in Maschera", prince Calaf in "Turandot" and Don Alvaro in "La Forza del Destino" Franco Corelli (8 April 1921 – 29 October 2003) was an Italian tenor who had a major international opera career between 1951 and 1976.  Associated in particular with the spinto and dramatic tenor roles of the Italian repertory, he was celebrated universally for his powerhouse voice, electrifying top notes, clear timbre, passionate singing and remarkable performances.  Dubbed the "Prince of tenors", Corelli possessed handsome features and a charismatic stage presence which endeared him to audiences.  He had a long and fruitful partnership with the Metropolitan Opera in New York City between 1961 and 1975.  He also appeared on the stages of most of the major opera houses in Europe and with opera companies throughout North America. "E lucevan le stelle " ("And the stars were shining") is a romantic aria from the third act of Giacomo Puccini's opera "Tosca", composed in 1900 to an Italian libretto by Luigi Illica and Giuseppe Giacosa.  It is sung by Mario Cavaradossi (tenor), a painter in love with the singer Tosca, while he waits for his execution on the roof of Castel Sant'Angelo. Jonas Kaufmann (born 10 July 1969) is a German operatic tenor.  He is best known for his performances in "spinto" roles such as Don José in "Carmen", Cavaradossi in "Tosca", Maurizio in "Adriana Lecouvreur", and the title role in "Don Carlos".  He has also sung leading tenor roles in the operas of Richard Wagner with success in Germany and abroad, most notably the Metropolitan Opera in New York.  He is also an accomplished Lieder singer.  In 2014 "The New York Times" described Kaufmann as "a box-office draw, and... the most important, versatile tenor of his generation." Paul Shearer Althouse (December 2, 1889 – February 6, 1954) was an American opera singer.  He began his career as a lyric tenor with a robust Italianate sound, in roles like Mario Cavaradossi in Tosca, Lieutenant Pinkerton in Madama Butterfly, and Turiddu in Cavalleria rusticana.  He later branched out into the dramatic tenor repertoire, finding success in portraying Wagnerian heroes.  He sang with the Metropolitan Opera in New York City for 30 years. Emilio Venturini (1878 - 1952) was an Italian operatic lyric tenor known for his portrayal of character roles.  He made his professional opera debut in 1900 in Italy where he remained for the next several years.  In 1901 he sang the role of Brighella in Mascagni's "Le maschere" at the Teatro Regio in Turin.  He made his La Scala debut in 1903 as Froh in Wagner's "Das Rheingold" and sang in the premiere of Umberto Giordano's "Siberia".  In 1904, he originated the role of Prince Yamadori in Puccini's "Madama Butterfly" at La Scala.  In 1905, Venturini joined the roster of the Opéra National de Paris.  In 1907 he moved to London to sing with Royal Opera at Covent Garden.  In 1910, Venturini became a member of the Chicago Opera Association where he performed roles until the summer of 1917.  While in Chicago he sang mostly character parts but did sing some major roles like Turiddu in "Cavalleria rusticana", Edgardo in "Lucia di Lammermoor" and the Pinkerton in "Madama Butterfly".  In 1911 he sang the roles of Cassio in Verdi's "Otello" and Spoletta in Puccini's "Tosca" at the Metropolitan Opera.  Venturini also returned to Italy for brief periods in 1910, 1911, and 1916 to perform roles with the Teatro Massimo in Palermo.  In 1921, Venturini joined the roster at La Scala and sang roles with that opera house until 1948.  He notably originated the roles of Il Tempiere in Boito's "Nerone" in 1924 and Pang in Puccini's "Turandot" in 1926.  and was the first to record the role of Nereo in Boito's "Mefistofele" in the 1931 La Scala recording. Emilio De Marchi (] ; January 6, 1861 – March 20, 1917) was an Italian operatic tenor.  He had a significant career during the late 19th and early 20th century, appearing at major theatres on both sides of the Atlantic.  In 1900, he entered the annals of musical history as the creator of the role of Cavaradossi in Giacomo Puccini's "Tosca".  Today, however, he has largely been forgotten because, unlike many of his contemporaries, he did not leave a legacy of commercial gramophone or phonograph recordings. Spanish tenor Plácido Domingo has officially sung 147 roles in Italian, French, German, English, Spanish and Russian.  His main repertoire however is Italian ("Otello", Cavaradossi in "Tosca", "Don Carlo", Des Grieux in "Manon Lescaut", Dick Johnson in "La fanciulla del West", Radames in "Aida"), French ("Faust", "Werther", Don José in "Carmen", Samson in "Samson et Dalila"), and German ("Lohengrin", "Parsifal", and Siegmund in "Die Walküre").  Domingo currently continues to add more operas to his repertoire.  Since 2009, he has moved substantially into the baritone repertoire, especially focusing on Verdi baritone roles.  In 2015, he made his most recent debuts as Macbeth at the Berliner Staatsoper, Don Carlo in "Ernani" at the Metropolitan Opera, and Gianni Schicchi at the Los Angeles Opera.  Tim Page, a Pulitzer Prize-winner for music criticism, described Domingo in a 1996 "Washington Post" article as "the most versatile, intelligent and altogether accomplished operatic tenor now before the public." Tosca is a 1956 Italian musical film directed by Carmine Gallone and starring Franca Duval, Afro Poli and Franco Corelli.  It is based on the opera "Tosca" by Giacomo Puccini.  It was made at Cinecittà in Rome.
Answer: Italian