Question:  The initial tornado of the Late-May 1998 tornado outbreak hit a state named after which Native American tribes?
Context: The 1998 Eastern Tornado Outbreak of June 2, 1998, was one of the most significant tornado outbreaks in recent history over the east-central United States.  This severe weather event spawned a total of 47 tornadoes over 9 states from New York to South Carolina and caused an estimated $42 million in damage, 80 injuries and 2 fatalities.  For Pennsylvania in particular, it was the second historic and deadly severe weather outbreak in three days, as it immediately followed the Late-May 1998 Tornado Outbreak and Derecho on May 30–31, 1998, which spawned 41 tornadoes over New York, New Jersey, Pennsylvania and Vermont, caused an estimated $83 million in damage, 109 injuries and 1 fatality. The 1985 United States – Canada tornado outbreak, referred to as the Barrie tornado outbreak in Canada, was a major tornado outbreak that occurred in Ohio, Pennsylvania, New York, and Ontario, on May 31, 1985.  44 tornadoes were counted including 14 in Ontario, Canada.  It is the largest and most intense tornado outbreak ever to hit this region, and the worst tornado outbreak in Pennsylvania history in terms of deaths and destruction. The 1932 Deep South tornado outbreak was a deadly tornado outbreak that struck the Southern United States on March 21–22, 1932.  At least 36 tornadoes—including 27 killers and several long-lived tornado families—struck the Deep South, killing more than 330 people and injuring 2,141.  Tornadoes affected areas from Mississippi north to Illinois and east to South Carolina, but Alabama was hardest hit, with 268 fatalities; the outbreak is considered to be the deadliest ever in that U.S. state, and among the worst ever in the United States, trailing only the Tri-State Tornado outbreak in 1925, with 747 fatalities, and the Tupelo-Gainesville outbreak in 1936, with 454 fatalities.  The 1932 outbreak produced 10 violent tornadoes, classified F4 or F5 on the Fujita scale of tornado intensity, eight of which occurred in Alabama alone, and is surpassed only by the March 1952 tornado outbreak, with 11 violent tornadoes; the 2011 Super Outbreak, with 15; the 1965 Palm Sunday tornado outbreak, with 17; and the 1974 Super Outbreak, with 30. The Early-April 1957 tornado outbreak sequence was a deadly tornado outbreak sequence that struck most of the Southern United States from April 2–5, 1957.  The outbreak killed at least 21 people across three states and produced at least 72 tornadoes from Texas to Virginia.  The outbreak was most notable due to a tornado that hit a densely populated area of the Dallas–Fort Worth metropolitan area, killing 10 people and injuring 200 or more.  The tornado, highly visible for most of its path, was at the time the most observed and best-documented tornado in recorded history; hundreds of people photographed or filmed the F3 tornado as it moved just west of Downtown Dallas.  The film of this tornado is still known for its unusually high quality and sharpness, considering the photography techniques and technology of the 1950s.  Damage from the Dallas tornado reached as high as $4 million (1957 USD).  Besides the famous Dallas tornado, other deadly tornadoes struck portions of Mississippi, Texas, and Oklahoma.  Two F4 tornadoes struck southern Oklahoma on April 2, killing five people.  Three other significant, F2-rated tornadoes that day killed two people in Texas and one more in Oklahoma.  An F3 tornado struck rural Mississippi on April 4, killing one more person.  In addition to confirmed tornadoes, a possible tornado hit Ballard County, Kentucky, on April 3, unroofing homes, destroying a drive-in theater, and uprooting trees.  A loud roaring noise was heard.  Two other brief tornadoes may have hit near Westlake and at Tallulah, Louisiana, late on April 4. The 1944 Appalachians tornado outbreak was a deadly tornado outbreak that hit the Midwest and Middle Atlantic regions of the United States on June 22–23, 1944.  The outbreak produced several strong tornadoes in Pennsylvania, West Virginia, and Maryland—areas that were falsely believed to be immune to tornadoes.  Particularly hard hit was the town of Shinnston in Harrison County, West Virginia, which was destroyed by a violent F4 tornado before 9:00 PM EDT on June 23.  Thirty people died at Shinnston and at least 104 were killed in the state of West Virginia by this and two other intense tornadoes.  The outbreak itself was and still remains the deadliest tornado outbreak ever to hit the state of West Virginia.  The Shinnston tornado was and is the only tornado to produce violent damage in West Virginia.  No violent (F4–F5) tornado has hit West Virginia before or since the 1944 outbreak. South Dakota ( ; [ˌsɑʊθ dəˈko̞ɾə] ) is a state in the Midwestern region of the United States.  It is named after the Lakota and Dakota Sioux Native American tribes, who compose a large portion of the population and historically dominated the territory.  South Dakota is the 17th most expansive, but the 5th least populous and the 5th least densely populated of the 50 United States.  Once the southern part of the Dakota Territory, South Dakota became a state on November 2, 1889, simultaneously with North Dakota.  Pierre is the state capital and Sioux Falls, with a population of about 171,000, is South Dakota's largest city. The 2003 South Dakota tornado outbreak, known locally as "Tornado Tuesday," was a tornado outbreak that occurred in the southeastern and east central part of South Dakota in the United States on June 24, 2003.  At the time, this outbreak tied a United States record for the most tornado touchdowns in a single day for one state, with 67.  The event was part of a larger outbreak that produced 125 tornadoes.  However this record was surpassed by a tornado outbreak in Kansas on May 23, 2008 when 73 tornadoes hit the state, including two that started in Oklahoma.  It was also the largest tornado outbreak ever recorded in the astronomical summer period that was not related to a tropical cyclone. The April 6–9, 1998 tornado outbreak was a large tornado outbreak that started on April 6 across the Great Plains and ended on April 9 across the Carolinas and Georgia.  A total of 62 tornadoes touched down from the Middle Atlantic States to the Midwestern United States and Texas.  The outbreak is infamous for producing a deadly F5 that tore through the suburbs of Birmingham, killing 32 people.  The Birmingham tornado was one of only two F5 tornadoes that year.  The other hit in Lawrence County, Tennessee, on April 16, as part of the same outbreak as the 1998 Nashville tornadoes.  This tornado outbreak was responsible for 41 deaths: 7 in Georgia and 34 in Alabama. The tornado outbreak of January 21–23, 2017 was a prolific and deadly winter tornado outbreak that occurred across the Southeast United States.  Lasting just under two days, the outbreak produced a total of 81 tornadoes, cementing its status as the second-largest January tornado outbreak and the third-largest winter tornado outbreak since 1950.  Furthermore, it was the largest outbreak on record in Georgia with 42 tornadoes confirmed in the state.  The most significant tornadoes were three EF3s that heavily damaged or destroyed portions of Hattiesburg, Mississippi, and Albany and Adel, Georgia.  A total of 20 people were killed by tornadoes—mainly during the pre-dawn hours of the outbreak—making it the second-deadliest outbreak in January since 1950, behind the 1969 Hazlehurst, Mississippi tornado outbreak that killed 32 people.  In the aftermath of the outbreak, relief organizations assisted in clean-up and aid distribution.  Total economic losses from the event reached at least $1.3 billion (2017 USD). The Late-May 1998 tornado outbreak and derecho was a historic tornado outbreak and derecho that began on the afternoon of May 30 and extended throughout May 31, 1998, across a large portion of the northern half of the United States and southern Ontario from southeastern Montana east and southeastward to the Atlantic Ocean.  The initial tornado outbreak, including the devastating Spencer tornado, hit southeast South Dakota on the evening of May 30.  The Spencer tornado was the most destructive and the second-deadliest tornado in South Dakota history.  Eleven people were killed; 7 by tornadoes and 6 by the derecho.  Over two million people lost electrical power, some for up to 10 days.
Answer: Lakota and Dakota Sioux