question: What is the ethnicity of the terrorist killed in a raid led by stealth helicopters in May 2011?
answer: Yemeni Kindite
context: Title: Ku Klux Klan raid (Inglewood)
  Passage: Ku Klux Klan activities in Inglewood, California, were highlighted by the 1922 arrest and trial of 36 men, most of them masked, for a night-time raid on a suspected bootlegger and his family.  The raid led to the shooting death of one of the culprits, an Inglewood police officer.  A jury returned a "not guilty" verdict for all defendants who completed the trial.  It was this scandal, according to the "Los Angeles Times," that eventually led to the outlawing of the Klan in California.  The Klan had a chapter in Inglewood as late as October 1931.
  Title: Operation Rhino
  Passage: Operation Rhino was a raid led by the United States Army's 75th Ranger Regiment (3rd Ranger Battalion), who were led by Colonel Joseph Votel, and the 101st Airborne Division on several Taliban targets in and around Kandahar, Afghanistan during the invasion of Afghanistan at the start of the War in Afghanistan (2001–2014).
  Title: Stealth helicopter
  Passage: Stealth helicopters are helicopters that incorporate stealth technology to avoid detection.  Helicopters are in many ways less suitable for stealth technology than airplanes are, because of the noise generated by their rotor blades, which also give off a strong radar signature.  In recent years, designs for blades have emerged that can significantly reduce noise, which is a major issue for clandestine use of helicopters.  A raid on the compound of Osama bin Laden in May 2011 utilized what appeared to be two Sikorsky UH-60 Black Hawks, heavily modified for quieter operations and employing stealth technology to be less visible to radar.
  Title: Carleton's Raid
  Passage: Carleton's Raid was a British raid led by Major Christopher Carleton during the American War of Independence, conducted in fall 1778 from the Province of Quebec against targets in upstate New York and the Vermont Republic.
  Title: Capture of Plymouth
  Passage: The Capture of Plymouth was a battle of the American Civil War, fought in October 1864.  Following the sinking of CSS "Albemarle" during a commando raid led by Lieutenant William B. Cushing, Union naval forces attacked Plymouth, North Carolina, which was defended by Confederate artillery.  After three days of fighting the Confederates retreated from the area, allowing the Union navy to land men and occupy the town.
  Title: May 2015 U.S. special forces raid in Syria
  Passage: On 15 May 2015, 1st SFOD-Delta operators from the Joint Special Operations Command based in Iraq conducted an operation in Al-Amr, Syria to capture a senior Islamic State of Iraq and the Levant (ISIL) leader named Abu Sayyaf, resulting in his death when he engaged United States forces in combat, after his location was confirmed by surveillance from British SAS operators.  Abu Sayyaf's role in ISIL was managing its gas and oil operations; he had built up a network of traders and wholesalers of ISIL-controlled oil that he helped triple energy revenues for the terror group.  His other duties for the group included approving expenses to cover the upkeep of slaves, rebuilding oil facilities damaged by airstrikes and counting of revenue.  The wife of Abu Sayyaf, Umm Sayyaf was captured and is currently held by U.S. Forces in Iraq.  The operation also led to the freeing of a Yazidi woman who was held as a slave.  About a dozen ISIL fighters were also killed in the raid, two US officials said.  The Syrian Observatory for Human Rights reported that an additional 19 ISIL fighters were killed in the US airstrikes that accompanied the raid.  One official said that ISIL Forces fired at the U.S. aircraft, and there was reportedly hand-to-hand combat during the raid.  Sikorsky UH-60 Black Hawk helicopters and Bell Boeing V-22 Osprey tilt-rotor aircraft were used to conduct the raid.
  Title: Osama bin Laden
  Passage: Usama ibn Mohammed ibn Awad ibn Ladin (Arabic: أسامة بن محمد بن عوض بن لادن‎ ‎ , "usāmah ibn muḥammad ibn ‘awaḍ ibn lādin "), often anglicized as Osama bin Laden ( ; March 10, 1957 – May 2, 2011) was the founder of al-Qaeda , the organization that was responsible for the September 11 attacks on the United States, along with numerous other mass-casualty attacks worldwide.  He was a Saudi Arabian, a member of the wealthy bin Laden family, and an ethnic Yemeni Kindite.
  Title: George's Schoolhouse Raid
  Passage: The George's Schoolhouse Raid was a Confederate partisan raid led by local guerrilla John Mobberly on the Union garrison at Lovettsville in Loudoun County, Virginia on January 17, 1865, during the American Civil War.  The raid was tactically inconclusive.  After surprising the sleeping garrison, the Confederates were driven away by superior force, taking with them only a few horses and prisoners.  The raid is notable for being the last partisan action in Loudoun County involving Elijah V. White's 35th Battalion of Virginia Cavalry.
  Title: Gung Ho! (1943 film)
  Passage: Gung Ho!  (full title: Gung Ho! : The Story of Carlson's Makin Island Raiders) is a 1943 American war film directed by Ray Enright and starring Randolph Scott.  The story is based on the real-life World War II Makin Island raid led by Lieutenant Colonel Evans Carlson's 2nd Marine Raider Battalion.
  Title: Egyptian raid on Larnaca International Airport
  Passage: On 19 February 1978, Egyptian special forces raided Larnaca International Airport near Larnaca, Cyprus, in an attempt to intervene in a hijacking.  Earlier, two assassins had killed prominent Egyptian newspaper editor Youssef Sebai and then rounded up as hostages several Arabs who were attending a convention in Nicosia.  As Cypriot forces were trying to negotiate with the hostage-takers at the airport, Egyptian troops launched their own assault without authorization from the Cypriots.  The unauthorized raid led to the Egyptians and the Cypriots exchanging gunfire, killing or injuring more than 20 of the Egyptian commandos.  As a result, Egypt and Cyprus severed political ties for several years after the incident.
citations: Stealth helicopter Osama bin Laden