Definition: Compose a new way to ask the same question. The new question must be asking the exact same thing as the original question does. Without any other information, you should be able to tell that the original question and the new question are the same. Preserve bracketed phrases in your new question. You can change the rest of the question provided the above requirements are satisfied. The new question must have a natural, fluent formulation, as if it were composed by a native English speaker. You will be given three pieces of information to help you create better questions. Those are: "Answer": the answer to the question, e.g., "Honolulu". "Answer Type": the type of the answer, e.g., "Location". "Auxiliary Information" is a detailed description of some concepts mentioned in the question, if any.
Input: original question: Which composition written by [Johnny Mercer] has subject as [Savannah]?
answer: moon river
answer type: Composition.
auxiliary information: Savannah is the oldest city in the U.S. state of Georgia and is the county seat of Chatham County. Established in 1733, the city of Savannah became the British colonial capital of the Province of Georgia and later the first state capital of Georgia. A strategic port city in the American Revolution and during the American Civil War, Savannah is today an industrial center and an important Atlantic seaport. It is Georgia's fifth-largest city and third-largest metropolitan area. Each year Savannah attracts millions of visitors to its cobblestone streets, parks, and notable historic buildings: the birthplace of Juliette Gordon Low, the Georgia Historical Society, the Telfair Academy of Arts and Sciences, the First African Baptist Church, Temple Mickve Israel, and the Central of Georgia Railway roundhouse complex. Savannah's downtown area, which includes the Savannah Historic District, the Savannah Victorian Historic District, and 22 parklike squares, is one of the largest National Historic Landmark Districts in the United States. Downtown Savannah largely retains the original town plan prescribed by founder James Oglethorpe.Johnny Mercer:;Type: Songwriter. ;

[Savannah] is the subject of which composition written by [Johnny Mercer]?