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 musician is a sibling of [Ted Kennedy]?
answer: john f. kennedy
answer type: Musician.
auxiliary information: Edward Moore "Ted" Kennedy was a United States Senator from Massachusetts and a member of the Democratic Party. He was the second most senior member of the Senate when he died and was the fourth-longest-serving senator in United States history, having served there for almost 47 years. The most prominent living member of the Kennedy family for many years, he was the last surviving son of Joseph P. Kennedy, Sr. and Rose Kennedy; the youngest brother of President John F. Kennedy and Senator Robert F. Kennedy, both victims of assassination; and the father of Congressman Patrick J. Kennedy. Kennedy entered the Senate in a November 1962 special election to fill the seat once held by his brother John. He was elected to a full six-year term in 1964 and was reelected seven more times. The Chappaquiddick incident on July 18, 1969, resulted in the death of his automobile passenger, Mary Jo Kopechne. Kennedy pleaded guilty to a charge of leaving the scene of an accident; the incident and its aftermath hindered his chances of ever becoming President of the United States.

[Ted Kennedy] is a sibling of which musician?