Question: Which opera did this American composer and pianist whose Broadway show songs were included in The Passing Show of 1916 compose?

full_context: Document 1: Hitchy-Koo: Hitchy-Koo of 1919 is a musical revue with music and lyrics by Cole Porter and a book by George V. Hobart. This revue was third in a series of four "Hitchy-Koo" revues from 1917 to 1920 produced by, and starring, Raymond Hitchcock. The original Broadway production of this version played in 1919. The revue received favourable reviews.
Document 2: Gershwin (disambiguation): George Gershwin (1898–1937), American composer, author of famous works such as "Rhapsody in Blue" and "An American in Paris"
Document 3: Second Rhapsody: The Second Rhapsody is a concert piece for orchestra with piano by American composer George Gershwin, written in 1931. It is sometimes referred to by its original title, "Rhapsody in Rivets".
Document 4: Rhapsody in Blue: Rhapsody in Blue is a 1924 musical composition by American composer George Gershwin for solo piano and jazz band, which combines elements of classical music with jazz-influenced effects.
Document 5: The Passing Show of 1916: The Passing Show of 1916 is a revue featuring the music of Sigmund Romberg and Otto Motzan, with book and lyrics by Harold R. Atteridge. It included the first George Gershwin songs introduced in a Broadway show.
Document 6: Watch Your Step (musical): Watch Your Step is a musical with music and lyrics by Irving Berlin and a book by Harry B. Smith. It was Irving Berlin's debut musical. "Play a Simple Melody" and "They Always Follow Me Around" as well as "When I Discovered You" and "The Syncopated Walk" were introduced by this musical. A highlight of the show was the Act II Finale, "Opera in Modern Time" in which melodies from famous operas were turned into popular dances of the time. The Ghost of Verdi then appeared to protest the ragging of his "Rigoletto" to no avail.
Document 7: Rhapsody in Blue (film): Rhapsody in Blue is a 1945 fictionalized screen biography of the American composer and musician George Gershwin (September 26, 1898 – July 11, 1937) released by Warner Brothers.
Document 8: George Gershwin: George Jacob Gershwin ( ; September 26, 1898 July 11, 1937) was an American composer and pianist. Gershwin's compositions spanned both popular and classical genres, and his most popular melodies are widely known. Among his best-known works are the orchestral compositions "Rhapsody in Blue" (1924) and "An American in Paris" (1928) as well as the opera "Porgy and Bess" (1935).
Document 9: The Passing Show: The Passing Show was a musical revue in three acts, billed as a "topical extravaganza", with a book and lyrics by Sydney Rosenfeld and music by Ludwig Engländer and various other composers. It featured spoofs of theatrical productions of the past season. The show was presented in 1894 by George Lederer at the Casino Theatre. It was one of the first musical revues on Broadway and led the fashion for such productions. The Casino Theatre produced a revue each summer thereafter for several seasons.
Document 10: The Passing Show of 1918: The Passing Show of 1918 is a Broadway musical revue featuring music of Sigmund Romberg and Jean Schwartz (and other songwriters), with book and lyrics by Harold R. Atteridge. The show introduced the hit songs "I'm Forever Blowing Bubbles" and "Smiles".
Document 11: 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 12: Florenz Ziegfeld Jr.: Florenz Edward Ziegfeld Jr. (March 21, 1867 – July 22, 1932), popularly known as Flo Ziegfeld, was an American Broadway impresario, notable for his series of theatrical revues, the "Ziegfeld Follies" (1907–1931), inspired by the "Folies Bergère" of Paris. He also produced the musical "Show Boat". He was known as the "glorifier of the American girl". Ziegfeld is a member of the American Theater Hall of Fame.
Document 13: Americana (revue): Americana is a musical revue in two parts, with book and lyrics by J. P. McEvoy, and music by Con Conrad with additional numbers by George Gershwin, Ira Gershwin, Philip Charig, James Hanley, B. G. DeSylva, Morrie Ryskind, Arthur Schwartz, Theo Goodwin, Joe Young, and Sam Lewis. The show was presented by Richard Herndon at the Belmont Theatre (121 W. 48th Street, New York, NY), and, after many postponements, opened July 26, 1926. The show was staged by Allan Dinehart with dance numbers by Larry Ceballos. The production was designed by John Held, Jr. It ran for 224 performances, closing in February, 1927. The cast headlined Lew Brice, Roy Atwell, Betty Compton, Charles Butterworth and the Eddie Elkins Orchestra The New York Times review called it a "witty, ingenious and sophisticated evening of fun-making, it made up in its abundant humor for more than it lacked in some other departments." The other departments referred to were lack of chorus girls and opulent settings.
Document 14: Rhapsody in Blue (disambiguation): Rhapsody in Blue is a musical composition by American composer George Gershwin.
Document 15: Porgy and Bess: A Symphonic Picture: Arranged by Gershwin's good friend and sometimes assistant Robert Russell Bennett in 1942, Porgy and Bess: A Symphonic Picture includes most of the best-known songs from the Gershwin opera "Porgy and Bess", although not exactly in the order of their appearance. Though the Symphonic Picture is sometimes dismissed as a sequence of the opera's "greatest hits," the first well-known melody, "Summertime," is not heard until nearly seven minutes into the work. While some of the more esoteric parts of the opera are absent, much of the catchier tunes can be heard only in this suite and not in others, as Gershwin neglected to include them in his "Catfish Row Suite", which tended to highlight the more cerebral elements of the work.
ground_truth: Porgy and Bess