Question: When did the drinking age become 21 in the state where WMSE is located?

full_context: Document 1: Melbourne: A long list of AM and FM radio stations broadcast to greater Melbourne. These include "public" (i.e., state-owned ABC and SBS) and community stations. Many commercial stations are networked-owned: DMG has Nova 100 and Smooth; ARN controls Gold 104.3 and KIIS 101.1; and Southern Cross Austereo runs both Fox and Triple M. Stations from towns in regional Victoria may also be heard (e.g. 93.9 Bay FM, Geelong). Youth alternatives include ABC Triple J and youth run SYN. Triple J, and similarly PBS and Triple R, strive to play under represented music. JOY 94.9 caters for gay, lesbian, bisexual and transgender audiences. For fans of classical music there are 3MBS and ABC Classic FM. Light FM is a contemporary Christian station. AM stations include ABC: 774, Radio National, and News Radio; also Fairfax affiliates 3AW (talk) and Magic (easy listening). For sport fans and enthusiasts there is SEN 1116. Melbourne has many community run stations that serve alternative interests, such as 3CR and 3KND (Indigenous). Many suburbs have low powered community run stations serving local audiences.
Document 2: WSOE: WSOE is a non-commercial student-run college radio station based at Elon University in Elon, North Carolina that broadcasts at 89.3fm. The station serves as a creative outlet for students and as a means for students to develop skills for professional broadcast careers. WSOE offers a variety of opportunities in news shows, sports broadcasting, artist interviews, and music technology. Limelight Records, Elon's student-run record label, has worked with WSOE to promote its artists through live sets and interviews on air. The station aims to promote local artists through ticket giveaways, band interviews, and playing these musicians' music over the air.
Document 3: 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 4: 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 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 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 6: 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 7: WMSE: WMSE (91.7 FM) is a non-commercial radio station in Milwaukee, Wisconsin, playing a wide-ranging eclectic music format run by volunteer DJ's. The station is part of the Milwaukee School of Engineering (MSOE).
Document 8: 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 9: WORT: WORT (89.9 FM) is a listener-sponsored community radio station, broadcasting from 118 S. Bedford St. in Madison, Wisconsin, United States. WORT offers a range of programming.
Document 10: 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 11: 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.
Document 12: WCUR: 91.7 WCUR FM "The Curve", also known as West Chester University Radio, is a college radio station that broadcasts in the Philadelphia area via a transmitter that covers a 5-mile radius around West Chester University in West Chester, Pennsylvania. WCUR offers a wide variety of music, news, sports, and specialty programming. WCUR is considered a free format station, and it does not require that DJs play within certain parameters. All undergraduate students of West Chester University are free to participate and become DJs. WCUR began as WCSC AM 64, a carrier current station only available on campus. The call sign WCUR was being used in 1974. In 1976 the on air slogan became 64CUR and a Part 15 FM transmission was added at .1 watt to serve the Sykes Student Union building and extend across the street to Killnger Hall. Efforts began at that time to seek a class A FM license, but funds were not approved. In the mid-1980s the station changed its call letters to WCUR AM 68, but it remained a carrier current station. In 1998, the station received a construction permit to build an FM station, and after installing a broadcast transmitter and antenna atop Sykes Student Union in the summer of 1999, the station signed on as WCUR 91.7 FM on September 1, 1999. Since 2001, WCUR also streams live on air from anywhere in the world from its website, www.wcur.org.
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 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 14: History of radio: On February 17, 1919, station 9XM at the University of Wisconsin in Madison broadcast human speech to the public at large. 9XM was first experimentally licensed in 1914, began regular Morse code transmissions in 1916, and its first music broadcast in 1917. Regularly scheduled broadcasts of voice and music began in January 1921. That station is still on the air today as WHA.
Document 15: WERS: WERS (88.9 FM) is one of Emerson College's two radio stations (the other being campus station WECB), located in Boston, Massachusetts. Student-run and professionally managed, it serves eastern New England an eclectic mix of musical genres, and more live performances than any other station in the region. Programming features over 20 different styles of music and news, including live performances and interviews. WERS stands as the first non-commercial radio station in New England, and has been in operation since November 1949. Among the founders of the station was WEEI program director Arthur F. Edes, who first taught broadcasting courses at Emerson in 1932 and helped to plan a campus radio station. The chief architect of WERS in its early years was Professor Charles William Dudley.
ground_truth: September 1, 1986
sub_queries: In which state is WMSE located? Answer: Wisconsin
when did the drinking age change to 21 in Wisconsin Answer: September 1, 1986