Question: Are Cardillac and La donna del lago both operas?

Context articles: Robert Bruce (opera)
Francesco Tortoli
Sonia Ganassi
Sur del Lago de Maracaibo
La donna del lago
Cardillac
Vista del Lago High School (Folsom, California)
The Possessed (1965 film)
From No Man's Land to Plaza del Lago
Santa María del Lago

Robert Bruce is an 1846 pastiche opera in three acts, with music by Gioachino Rossini and Louis Niedermeyer to a French-language libretto by Alphonse Royer and Gustave Vaëz, after Walter Scott's "History of Scotland".
 The music was stitched together by Niedermeyer, with the composer's permission, with pieces from "La donna del lago", "Zelmira", and other Rossini operas.
 The work was premiered on 30 December 1846, by the Paris Opera at the Salle Le Peletier.
 The audience may not have noticed, but the orchestra included for the first time a recently invented instrument, which later came to be known as the saxophone.
Francesco Tortoli (or Tortolj) (1790 – 20 May 1824) was an Italian scenographer, active in Naples from 1808 at the city's principal theatres—Teatro San Carlo, Teatro del Fondo and Teatro dei Fiorentini.
 He was the creator of sets for numerous productions including those for the world premieres of Rossini's "La gazzetta", "Otello", "Armida", "Mosè in Egitto", and "La donna del lago".
 Tortoli was born in Florence and died in Naples of cholera at the age of 35.
Sonia Ganassi (born 1966) is an Italian mezzo-soprano.
 Born in Reggio Emilia, she made her debut as Rosina in Rossini’s "The Barber of Seville" in Rome in 1992.
 She has performed in many of the world’s famous opera houses including the Metropolitan Opera in New York City, the Royal Opera House in London and the Teatro alla Scala, Milan.
 She is best known for her work in the bel canto repertoire.
 Her roles in Rossini operas include Elisabetta in "Elisabetta, regina d'Inghilterra" (ROF, 2004), Elena in "La donna del lago (Lady of the Lake)" (Rossini in Wildbad, 2006), "Ermione" (ROF, 2008), and Elcia in "Mosè in Egitto" (ROF, 2011).
 In 2009 she participated in a live recording of Giuseppe Verdi's Messa da Requiem conducted by Antonio Pappano (EMI Classics 6 98936 2).
Sur del Lago de Maracaibo (often abbreviated as Sur del Lago, in English South of Maracaibo Lake) is a subregion comprising the territory of the municipalities Jesús María Semprún, Catatumbo, Colón, Francisco Javier Pulgar and Sucre from Zulia state and the municipality Alberto Adriani, Obispo Ramos Lora and the population of Palmarito from Tulio Febres Cordero municipality from the state of Mérida, Venezuela.
 Its major towns are Santa Barbara del Zulia, San Carlos del Zulia and El Vigia, which represents its economic epicenter.
La donna del lago (The Lady of the Lake) is an opera composed by Gioachino Rossini with a libretto by Andrea Leone Tottola (whose verses are described as "limpid" by one critic) based on the French translation of "The Lady of the Lake", a narrative poem written in 1810 by Sir Walter Scott, whose work continued to popularize the image of the romantic highlands.
 Scott's basic story has been noted as coming from "the hint of an incident stemming from the frequent custom of James V, the King of Scotland, of walking through the kingdom in disguise".
Cardillac is an opera by Paul Hindemith in three acts and four scenes.
 wrote the libretto based on characters from the short story "Das Fräulein von Scuderi" by E.T.A. Hoffmann.
Vista Del Lago High School (commonly referred to as Vista) is located in Folsom, California.
 It is one of three high schools in the Folsom Cordova Unified School District.
 The school opened in 2007 to serve the southern side of Folsom and to relieve overcrowding at Folsom High School.
 The official colors for VDLHS are navy blue and silver.
 The mascot is the eagle.
 Vista del Lago's first class graduated in May 2010.
The Possessed (Italian: "La donna del lago" , also known as "The Lady of the Lake") is a 1965 Italian mystery film written and directed by Luigi Bazzoni and Franco Rossellini and starring Peter Baldwin, Virna Lisi and Philippe Leroy.
 It is based on the novel by Giovanni Comisso.
From No Man's Land, To Plaza del Lago is a book by Robert Shea about the dispute over No Man's Land, Illinois, an unincorporated strip of land in between Wilmette and Kenilworth, Illinois.
 The title refers to Plaza del Lago shopping center, which had been created as a revitalization of the former 'Spanish Court' shopping center during the areas rejuvenation.
 The book was published in 1983, and includes photos lent from the Wilmette Historic Society.
 (ISBN  )
Santa María del Lago (Spanish: "Humedal Santa María del Lago" ) is a wetland, part of the Wetlands of Bogotá, located in the locality Engativá, Bogotá, Colombia.
 The wetland on the Bogotá savanna covers an area of 12 ha , of which 4 ha water.