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 US president was sibling of [Joseph P. Kennedy, Jr.]?
answer: john f. kennedy
answer type: US President.
auxiliary information: Lieutenant Joseph Patrick "Joe" Kennedy, Jr. was a junior officer in the United States Navy, a Naval Aviator, and a land-based patrol bomber pilot during World War II. He was the eldest of nine children born to Joseph P. Kennedy, Sr. and Rose Fitzgerald. He was the elder brother of future U.S. President, John F. Kennedy. Joseph Kennedy had been expected to become president, especially after his father's political exile for supporting the appeasement policy of Neville Chamberlain in the advent of World War II. However, Kennedy was killed in action during the war in a top-secret mission, and the high expectations then fell upon his younger brother John.

[Joseph P. Kennedy, Jr.] was a sibling to which US president?