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.
what is the name of [Ted Kennedy] sibling, who is also a  musician