Question: Rory Elizabeth Katherine Kennedy, is an American documentary filmmaker and youngest child of which U.S. Senator, and Ethel Kennedy, an American human-rights campaigner and widow? 
Context: Douglas Harriman Kennedy (born March 24, 1967) is the tenth child of Robert F. Kennedy and Ethel Kennedy, named in honor of W. Averell Harriman, a family friend and former governor of New York. John Bouvier Kennedy "Jack" Schlossberg (born January 19, 1993) is the youngest child of U.S. Ambassador to Japan Caroline Kennedy and the only grandson of John F. Kennedy, the 35th U.S. President.  He graduated from Yale University in 2015 and entered Harvard Law School in the fall of 2017. Loung Ung (Khmer: អ៊ឹង លឿង "Aung Lueng"; born April 17, 1970) is a Cambodian-born American human-rights activist and lecturer.  She is the national spokesperson for the Campaign for a Landmine-Free World.  Between 1997 and 2003 she served in the same capacity for the "International Campaign to Ban Landmines", which is affiliated with the Vietnam Veterans of America Foundation. Ethel is a 2012 documentary that premiered at the Sundance Film Festival.  The subject of the documentary is Ethel Kennedy, the widow of Robert F. Kennedy.  "Ethel" was scheduled to premiere on HBO later in 2012. Ethel Skakel Kennedy (born April 11, 1928) is an American human-rights campaigner and widow of Senator Robert F. Kennedy, who was assassinated while running for nomination as Democratic presidential candidate in 1968. Edward Moore "Ted" Kennedy (February 22, 1932 – August 25, 2009) was an American politician and lawyer who served as a United States Senator from Massachusetts for over forty years from 1962 until his death in 2009.  A member of the Democratic Party, he was the second most senior member of the Senate when he died and was the fourth-longest-continuously-serving senator in United States history, having served there for almost 47 years.  Ted Kennedy was the most prominent living member of the Kennedy family for many years, and he was also the last surviving, longest-living, and youngest son of Joseph P. Kennedy, Sr. and Rose Kennedy.  He was the youngest brother of John F. Kennedy, the 35th President of the United States and Senator Robert F. Kennedy, both victims of assassination, and the father of Congressman Patrick J. Kennedy. Mary Kerry Kennedy (born September 8, 1959) is an American human rights activist and writer.  She is the seventh child and third daughter of Robert F. Kennedy and Ethel Skakel Kennedy.  After her 15-year marriage to now-New York Governor Andrew Cuomo, she was known as Kerry Kennedy Cuomo from 1991 until 2003.  She is the president of Robert F. Kennedy Human Rights.  She is also a niece of the late President John F. Kennedy and United States Senator Ted Kennedy, and a cousin of former U.S. Ambassador to Japan Caroline Kennedy and Maria Shriver, the estranged wife of actor, bodybuilder, and former California Governor Arnold Schwarzenegger. Rory Elizabeth Katherine Kennedy (born December 12, 1968) is an American documentary filmmaker and youngest child of U.S. Senator Robert Kennedy and Ethel Kennedy. McLean ( ) is a census-designated place (CDP) in Fairfax County in Northern Virginia.  McLean is home to many diplomats, businessmen, members of Congress, and high-ranking government officials partially due to its proximity to Washington, D.C. and the Central Intelligence Agency.  It is the location of Hickory Hill, the former home of Ethel Kennedy, the widow of Robert F. Kennedy.  It is also the location of Salona, the former home of Light-Horse Harry Lee, the Revolutionary War hero.  The community had an estimated total population of 53,673 in 2015, according to estimates prepared by the United States Census Bureau.  It is located between the Potomac River and the town of Vienna.  McLean is known for its luxury homes and its high-end shopping destinations: the Tysons Corner Center and the Tysons Galleria.  The two McLean zip codes - 22101 and 22102 - are among the most expensive ZIP Codes in Virginia and the United States. The Joseph P. Kennedy Jr.  Foundation (JPKF) is a non-profit foundation founded by Ambassador Joseph P. Kennedy Sr. in 1946 in memory of his son Joseph P. Kennedy Jr..  The foundation was led by his youngest brother, U.S. Senator Edward M. Kennedy, until his death in 2009.  The foundation funded the construction of the Joseph P. Kennedy Jr.  Memorial Hall at Boston College, now a part of Campion Hall and home to the college's Lynch School of Education.  The foundation had assets in 2000 of $30 million.
Answer: Robert Kennedy