Question: What are The Bohemian Girl and Der Kaiser von Atlantis?
Context: Der Kaiser von Schexing is a German television series. Der Kaiser von Atlantis oder Die Tod-Verweigerung ("The Emperor of Atlantis or The Disobedience of Death") is a one-act opera by Viktor Ullmann with a libretto by Peter Kien.  They collaborated on the work while interned in the Nazi concentration camp of Theresienstadt (Terezín) around 1943.  The Nazis did not allow it to be performed there. Miloud Hadefi (Arabic: ميلود هدفي‎ ‎ ; March 12, 1949 in Oran – June 6, 1994) was an Algerian football player and manager.  Hedefi represented Algeria in two Football World Cup qualifying matches.  His preferred position was Libero.  He was nicknamed "the African Kaiser" by Pelé because of his similar style to German defender "Der Kaiser", Franz Beckenbauer. Maria Bard (7 July 1900 – 8 April 1944) was a German stage actress, who made a handful of films in the silent era for Rimax, her first husband Wilhelm Graaff's company.  By 1930, her marriage with Graaff was over, and she appeared with Werner Krauss in the stage production "Der Kaiser von Amerika" or "The King of America" and the two became involved.  Unfortunately, Krauss' wife discovered their affair and committed suicide; a year later, in 1931, Maria Bard married Werner Krauss.  Her third husband was actor Hannes Stelzer.  Bard committed suicide on 8 April 1944, apparently for political reasons.  On December 27, 1944, toward the end of World War II, Stelzer who was in the Luftwaffe at this point, died when his plane was shot down over the Eastern front. The Kaiser of California, better known as "The Emperor of California" (German "Der Kaiser von Kalifornien"), is a 1936 film that has the distinction of being the first western film made in Nazi Germany.  Some exterior scenes were even shot on location in the United States at Sedona, Arizona, the Grand Canyon and at Death Valley in California. The Bohemian Girl is a 1936 comedic feature film version of the opera "The Bohemian Girl" by Michael William Balfe.  It was produced at the Hal Roach Studios, and stars Laurel and Hardy and Thelma Todd in her last role before her death.  This was also the only appearance of Darla Hood in a full-length feature produced by Hal Roach. The Bohemian Girl is a ballad opera composed by Michael William Balfe with a libretto by Alfred Bunn.  The plot is loosely based on a Cervantes tale, "La Gitanilla". The Bohemian Girl is a 1922 British romance film directed by Harley Knoles and starring Gladys Cooper, Ivor Novello and C. Aubrey Smith.  It was inspired by the opera "The Bohemian Girl" by Michael William Balfe and Alfred Bunn which was in turn based on a novel by Cervantes.  Originally released at 70 minutes, the surviving print is missing the first two reels and small portion of the last, timing at 46 minutes. The Bohemian Cafe was located at 1406 South 13th Street in the historic Little Bohemia neighborhood of Omaha, Nebraska.  Established in 1924, the cafe sat next to the Prague Hotel.  Employees dressed in traditional Czech outfits since its early years, and a small cocktail lounge called the Bohemian Girl is adjoined to the restaurant; the interior decoration, similar to the rest of the building, includes hand-painted folk-art pictures.  Omaha native Conor Oberst, the lead singer of the rock act Bright Eyes, has been seen drinking at the bar before performing at the nearby Sokol Auditorium. Whittaker "Whit" Cunliffe (15 December 1875 in Haslingden – 1 May 1966) was an English comic singer known for the outfits worn during his stage performances and his World War I song "Hoch, Hoch Der Kaiser" and other songs including "What Does it Matter to Me? " (1906) and "A Different Girl Again".  Cunliffe was described as being a bit of a dandy.
Answer: The Bohemian Girl is a ballad opera