Question: Which country was Dora Luz's work in The Three Caballeros premiered in? 

full_context: Document 1: Panchito Pistoles: Panchito Pistoles is a cartoon character drawn as an anthropomorphized rooster. He appeared in the film "The Three Caballeros". Later he appeared in several Disney comics, including Don Rosa's "The Three Caballeros Ride Again" and "The Magnificent Seven (Minus 4) Caballeros". Panchito was the only one of the Three Caballeros to never appear in "Saludos Amigos", as he did not yet exist when the 1942 film was released before he first appeared in the 1944 film.
Document 2: Saludos Amigos: Saludos Amigos (Spanish for "Greetings, Friends") is a 1942 American live-action animated package film produced by Walt Disney and released by RKO Radio Pictures. It is the sixth Disney animated feature film and the first of the six package films produced by Walt Disney Productions in the 1940s. Set in Latin America, it is made up of four different segments; Donald Duck stars in two of them and Goofy stars in one. It also features the first appearance of José Carioca, the Brazilian cigar-smoking parrot. "Saludos Amigos" was popular enough that Walt Disney decided to make another film about Latin America, "The Three Caballeros", to be produced two years later. "Saludos Amigos" premiered in Rio de Janeiro on August 24, 1942. It was released in the United States on February 6, 1943. At 42 minutes, it is Disney's shortest animated feature to date. It garnered positive reviews and was theatrically reissued in 1949, when it was shown on a double bill with the first reissue of "Dumbo".
Document 3: Maria D'Luz: Dulce Maria Gonzalez Aldaz (born August 5, 1986), known professionally as Maria D'Luz, is a Mexican-American singer and songwriter.
Document 4: List of animated package films: This is a list of animated package films. There are two types of package films — a film with little or no new animation; usually there is only new bridge animation to link older theatrical/TV shorts together, for example "Daffy Duck's Quackbusters". The other type has all-new animation and might not always feature bridge animation. "Melody Time" doesn't feature bridge animation, but "The Three Caballeros" does. Home video releases of older theatrical and TV shorts or TV series are usually released as compilations and might therefore be thought of as packaged, but are usually not considered as such.
Document 5: Flor Silvestre filmography: Mexican singer Flor Silvestre, one of the most iconic performers of Mexican and Hispanic music, is also a prolific and versatile actress of Mexican cinema's "golden age". In her 40-year acting career, she played leading and supporting roles in more than 70 feature films of various genres. She was one of the most sought-after actresses of the late 1950s, and, as a result, 30 of her films were released in only four years (1957-1960). She worked with film directors Zacarías Gómez Urquiza, Vicente Oroná, Miguel M. Delgado, Jaime Salvador, Chano Urueta, Roberto Gavaldón, Gilberto Martínez Solares, Miguel Contreras Torres, Rogelio A. González, Ismael Rodríguez, Gilberto Gazcón, Benito Alazraki, Miguel Zacarías, René Cardona, and Mario Hernández.
Document 6: Gran Fiesta Tour Starring The Three Caballeros: Gran Fiesta Tour Starring The Three Caballeros is a musical dark boat ride housed within the pyramid-shaped Mexico Pavilion, at the Epcot theme park at the Walt Disney World Resort in Florida. It was the first World Showcase attraction to feature Disney characters based on an existing property. Norway followed suit in 2014 when it closed its Maelstrom ride to make room for Frozen Ever After, which opened in 2016.
Document 7: Fun and Fancy Free: Fun and Fancy Free is a 1947 American live-action animated musical fantasy comedy package film produced by Walt Disney and released on September 27, 1947 by RKO Radio Pictures. It is the 9th Disney animated feature film and the fourth of the package films the studio produced in the 1940s in order to save money during World War II. The Disney package films of the late 1940s helped finance "Cinderella", and subsequent others, such as "Alice in Wonderland" and "Peter Pan".
Document 8: Destino: Destino is an animated short film released in 2003 by The Walt Disney Company. "Destino" is unique in that its production originally began in 1945, 58 years before its eventual completion. The project was originally a collaboration between Walt Disney and Spanish Surrealist painter Salvador Dalí, and features music written by Mexican songwriter Armando Domínguez and performed by Mexican singer Dora Luz. It was included in the Animation Show of Shows in 2003.
Document 9: María Luisa Landín: María Luisa Landín (1921-2014) was a Mexican singer. She sang bolero, latin ballad and mariachi styles and was most noted for bolero. She began her career singing as a duo with her sister, but her most memorable works were as a solo singer after their duet broke up. Her 1949 interpretation of "Amor perdido" by Puerto Rican composer Pedro Flores became her signature song, is the second most-frequently played song in the history of the Mexican broadcasting and earned her the title "Queen of the Bolero". She recorded over 150 songs with RCA Records between 1939 and 1967, was a featured artist on La Voz Dominicana Television and appeared as a singer in several movies.
Document 10: The Three Caballeros: The Three Caballeros is a 1944 American live-action animated musical package film produced by Walt Disney and released by RKO Radio Pictures. The film premiered in Mexico City on December 21, 1944. It was released in the United States on February 3, 1945 and in the UK that March. The seventh Disney animated feature film, the film plots an adventure through parts of Latin America, combining live-action and animation. This is the second of the six package films released by Walt Disney Productions in the 1940s, following "Saludos Amigos" (1942).
Document 11: Melody Time: Melody Time (working title All in Fun) is a 1948 American live-action animated film and the 10th theatrically released animated feature produced by Walt Disney. It was released to theatres by RKO Radio Pictures on May 27, 1948. Made up of several sequences set to popular music and folk music, the film is, like "Make Mine Music" before it, the popular music version of "Fantasia" (an ambitious film that proved to be a commercial disappointment upon its original theatrical release). "Melody Time", while not meeting the artistic accomplishments of "Fantasia", was mildly successful. It is the fifth Disney package film following "Saludos Amigos", "The Three Caballeros", "Make Mine Music", and "Fun and Fancy Free".
Document 12: Sonia López: Sonia López (January 11, 1946—) is a Mexican singer, popular in the 1960s for her tropical hits. Known as ""La Chamaca de Oro"," she is best known for hits such as "Corazón de Acero", "El Ladrón", "El Nido", "Canela Pura"'De México a La Habana", "Mi caprichito", and her work with Sonora Santanera.
Document 13: Dora Luz: Dora Luz is the stage name of a Mexican singer and recording artist. She is known for her performance in Walt Disney's "The Three Caballeros" (1944), in which she sings Agustín Lara's "You Belong to My Heart" to Donald Duck. She also recorded "Destino", by Armando Domínguez, for Disney and Salvador Dalí's "Destino" in 1945.
Document 14: Don Donald: Don Donald is a 1937 American animated short film produced by Walt Disney Productions and released by United Artists. The cartoon follows Donald Duck attempting to woo a female Mexican duck named Donna. It was directed by Ben Sharpsteen and features music by Paul J. Smith which was adapted from the Mexican folk songs "Cielito Lindo" and "Jarabe Tapatío." Clarence Nash voiced both Donald and Donna.
Document 15: South of the Border with Disney: South of the Border with Disney is a 1942 Disney short documentary film. It was shot in the same occasion "Saludos Amigos" was, when Walt Disney and a group of eighteen artists, musicians and writers went to South America looking for inspirations for a movie. While "Saludos Amigos" is the result of this voyage, alternating animated shorts to the sequences from the travel that inspired them, "South of the Border with Disney" is more of a behind-the-scenes documentary showing only the travel and the genesis of cartoons not only for "Saludos Amigos" and "The Three Caballeros", but also some others used in later occasions. The most notable example is a female Armadillo used for a 1943 Pluto cartoon, "Pluto and the Armadillo". Film also includes some pencil test animation.
ground_truth: Mexico