Question: When did the drinking age become 21 in the state where Kaya Wittenburg was born?

full_context: Document 1: Caroline Winberg: Caroline Winberg was born in Sollentuna, Sweden. Winberg, a tomboy and aspiring professional football player in her youth for AIK from Solna a suburb north Stockholm, was en route to football training when scout Cesar Wintland spotted the 15-year-old and suggested that she consider a career in modelling.
Document 2: Kaya Wittenburg: Kaya Wittenburg (born August 24, 1972 in Wisconsin) is a fashion model, businessman and actor from the United States. He is best known for his international modeling career, walking runways in Europe, Asia, Africa and South America.
Document 3: Donnell Whittenburg: Donnell Whittenburg (born August 18, 1994 in Baltimore, Maryland) is an American artistic gymnast who won a bronze medal at the 2014 World Artistic Gymnastics Championships. He was the 2014 U.S. National champion on Vault and is the 2015 U.S. National Champion on the Rings. At the 2014 World Artistic Gymnastics Championships, Whittenburg won the bronze medal in the team event with the Americans, and contributed scored on floor exercise (15.300), still rings (14.766), vault (14.966) and parallel bars (14.633). At the 2015 World Artistic Gymnastics Championships, he won the individual bronze medal on vault with an average combined score of 15.350 behind Ri Se Gwang of North Korea (15.450) and Marian Drăgulescu of Romania (15.400). He also qualified for the individual still rings event final but finished in eight place with 15.300. At the 2017 London World Cup, Whittenburg won gold in that all-around competition, and at the 2017 Koper World Challenge Cup, the individual apparatus competition, in Slovenia, Whittenburg won gold on parallel bars, and silvers on floor and vault.
Document 4: Alcohol laws of New York: In response to the National Minimum Drinking Age Act in 1984, which reduced by up to 10% the federal highway funding of any state which did not have a minimum purchasing age of 21, the New York Legislature raised the drinking age from 19 to 21, effective December 1, 1985. (The drinking age had been 18 for many years before the first raise on December 4th, 1982, to 19.) Persons under 21 are prohibited from purchasing alcohol or possessing alcohol with the intent to consume, unless the alcohol was given to that person by their parent or legal guardian. There is no law prohibiting where people under 21 may possess or consume alcohol that was given to them by their parents. Persons under 21 are prohibited from having a blood alcohol level of 0.02% or higher while driving.
Document 5: Alcohol laws of New York: In response to the National Minimum Drinking Age Act in 1984, which reduced by up to 10% the federal highway funding of any state which did not have a minimum purchasing age of 21, the New York Legislature raised the drinking age from 19 to 21, effective December 1, 1985. (The drinking age had been 18 for many years before the first raise in 1984, to 19.) Persons under 21 are prohibited from purchasing alcohol or possessing alcohol with the intent to consume, unless the alcohol was given to that person by their parent or legal guardian. There is no law prohibiting where people under 21 may possess or consume alcohol that was given to them by their parents. Persons under 21 are prohibited from having a blood alcohol level of 0.02% or higher while driving.
Document 6: National Minimum Drinking Age Act: The National Minimum Drinking Age Act of 1984 (23 U.S.C. § 158) was passed by the United States Congress on July 17, 1984. It was a controversial bill that punished every state that allowed persons below 21 years to purchase and publicly possess alcoholic beverages by reducing its annual federal highway apportionment by 10 percent. The law was later amended, lowering the penalty to 8 percent from fiscal year 2012 and beyond.
Document 7: Arnold Schwarzenegger: Schwarzenegger is a dual Austrian/United States citizen. He holds Austrian citizenship by birth and has held U.S. citizenship since becoming naturalized in 1983. Being Austrian and thus European, he was able to win the 2007 European Voice campaigner of the year award for taking action against climate change with the California Global Warming Solutions Act of 2006 and plans to introduce an emissions trading scheme with other US states and possibly with the EU.
Document 8: Gina Tuttle: Gina Tuttle was born in California. She spent her teenage years in the Ocala, Florida area, where she graduated from Lake Weir High School. When she was 16, she began modeling bathing suits and clothing for Belk Lindsey department store advertisements.
Document 9: Kanye West: Kanye Omari West (/ˈkɑːnjeɪ/; born June 8, 1977) is an American hip hop recording artist, record producer, rapper, fashion designer, and entrepreneur. He is among the most acclaimed musicians of the 21st century, attracting both praise and controversy for his work and his outspoken public persona.
Document 10: Alcohol laws of Wisconsin: The drinking age in Wisconsin is 21. Those under the legal drinking age may be served, possess, or consume alcohol if they are with a parent, legal guardian, or spouse who is of legal drinking age. Those age 18 to 20 may also possess (but not consume) alcohol as part of their employment.
Document 11: Alcohol laws of Wisconsin: The drinking age in Wisconsin is 21. Those under the legal drinking age may be served, possess, or consume alcohol if they are with a parent, legal guardian, or spouse who is of legal drinking age. Those age 18 - 20 may also be served, possess or consume alcohol if they are with a parent, legal guardian, or spouse who is of legal drinking age. Those age 18 to 20 may also possess (but not consume) alcohol as part of their employment.
Document 12: Gerard W. Ford: Gerard William "Jerry" Ford (October 2, 1924 – August 24, 2008) was an American businessman who in 1946 founded Ford Modeling Agency with his wife Eileen Ford in their apartment on the Upper East Side of Manhattan in New York City.
Document 13: Alcohol laws of New York: In response to the National Minimum Drinking Age Act in 1984, which reduced by up to 10% the federal highway funding of any state which did not have a minimum purchasing age of 21, the New York Legislature raised the drinking age from 19 to 21, effective December 1, 1985. (The drinking age had been 18 for many years before the first raise in 1982, to 19.) Persons under 21 are prohibited from purchasing alcohol or possessing alcohol with the intent to consume, unless the alcohol was given to that person by their parent or legal guardian. There is no law prohibiting where people under 21 may possess or consume alcohol that was given to them by their parents. Persons under 21 are prohibited from having a blood alcohol level of 0.02% or higher while driving.
Document 14: U.S. history of alcohol minimum purchase age by state: From 1976 to 1983, several states voluntarily raised their purchase ages to 19 (or, less commonly, 20 or 21), in part to combat drunk driving fatalities. In 1984, Congress passed the National Minimum Drinking Age Act, which required states to raise their ages for purchase and public possession to 21 by October 1986 or lose 10% of their federal highway funds. By mid-1988, all 50 states and the District of Columbia had raised their purchase ages to 21 (but not Puerto Rico, Guam, or the Virgin Islands, see Additional Notes below). South Dakota and Wyoming were the final two states to comply with the age 21 mandate. The current drinking age of 21 remains a point of contention among many Americans, because of it being higher than the age of majority (18 in most states) and higher than the drinking ages of most other countries. The National Minimum Drinking Age Act is also seen as a congressional sidestep of the tenth amendment. Although debates have not been highly publicized, a few states have proposed legislation to lower their drinking age, while Guam has raised its drinking age to 21 in July 2010.
Document 15: Alcohol laws of Wisconsin: The 1983 Wisconsin Act 74, effective July 1, 1984, created a drinking age of 19. Meeting in special session at the call of the governor, the legislature enacted 1985 Wisconsin Act 337, which raised the drinking age to 21 and brought the state into compliance with the NMDA (National Minimum Drinking Age) on September 1, 1986.
ground_truth: September 1, 1986
sub_queries: Kaya Wittenburg >> place of birth Answer: Wisconsin
when did the drinking age change to 21 in Wisconsin Answer: September 1, 1986