Question: Who quaterbacked the Denver Broncos when they won Super Bowl XXXIII?
Context: Harald Hasselbach (born September 22, 1967) is a former defensive end who played 7 seasons in the NFL for the Denver Broncos.  He played for the Broncos from 1994 to 2000 and was a starter in Super Bowl XXXIII.  Previously, he played four seasons for the Calgary Stampeders of the CFL and also played in a Grey Cup winning team.  He is one of the few players to have been a part of a winning team in a Grey Cup and a Super Bowl.  In 2016, he was inducted into the B.C. Football Hall of Fame. The Atlanta Falcons are an American football team based in Atlanta, Georgia.  They are members of the South division of the National Football Conference (NFC) in the National Football League (NFL).  The Falcons joined the NFL as an expansion team in 1966 and have compiled an all-time record of 337 wins, 436 loses, and 6 ties.  The team has won the NFC West championship twice in 1980 and 1998 and the NFC South championship 4 times in 2004, 2010, 2012 and 2016.  The Falcons have appeared in two Super Bowls, losing both times; their first appearance was in Super Bowl XXXIII, with the Falcons falling to the Denver Broncos 19–34, and the second was in Super Bowl LI, where the Falcons fell to the New England Patriots 28–34 in overtime. Super Bowl XXXIII was an American football game played between the American Football Conference (AFC) champion Denver Broncos and the National Football Conference (NFC) champion Atlanta Falcons to decide the National Football League (NFL) champion for the 1998 season.  The Broncos defeated the Falcons by the score of 34–19, winning their second consecutive Super Bowl.  The game was played on January 31, 1999, at Pro Player Stadium in Miami (now part of the suburb of Miami Gardens, which became a separate city in 2003). Thunder is the stage name for the horse who is the official live animal mascot for the Denver Broncos football team.  Three purebred Arabians have held this role since 1993, all gray horses whose coats lightened with age until they turned completely white.  Sharon Magness-Blake has owned all three horses, and Ann Judge has been their rider since 1998 and trainer since 1999.  s of 2016 , Thunder has appeared in four Super Bowls with the team since 1998.  The original Thunder performed in Super Bowl XXXII and Super Bowl XXXIII and Thunder III appeared in Super Bowl XLVIII and Super Bowl 50.  Thunder III also made appearances in Times Square and on television morning news shows in New York City as part of the pre-game promotion for Super Bowl XLVIII.  He routinely appears in parades, makes hospital and school visits, and attends various other public functions.  He has been flown on airplanes, ridden in elevators, and appeared indoors at press conferences and banquets. Glenn E. Cadrez (born January 2, 1970) is a former American football linebacker who played 11 seasons in the National Football League, mainly for the Denver Broncos.  He played for the Broncos from 1995 to 2000 and was a starter in Super Bowl XXXIII and also played in Super Bowl XXXII.  He was the #154 pick in the 1992 NFL draft out of the University of Houston.  He played for the New York Jets (1992–1995), Denver Broncos (1995–2000) and Kansas City Chiefs (2001–2002).  He was named the AFC Defensive Player of the Week 10/11/98-10/17/98. Anthony Edward Jones (born May 24, 1966) is a former American football offensive tackle in the National Football League who played from 1988-2000.  He started Super Bowl XXXII and Super Bowl XXXIII with the Denver Broncos.  He was inducted into the Franklin County Sports Hall of Fame as a charter member on July 17, 1998. Tyrone Scott Braxton (born December 17, 1964 in Madison, Wisconsin) is a former American football safety who played for the Denver Broncos for most of his career from 1987 to 1999.  Braxton played in four Super Bowls with the Broncos, and won 2 NFL championship rings in Super Bowl XXXII and Super Bowl XXXIII.  Braxton also played one season with the Miami Dolphins in 1994 and was a one time Pro Bowler in 1996, a season in which he led the National Football League in interceptions with nine. John Albert Elway Jr. (born June 28, 1960) is a former American football quarterback and current executive vice president of football operations and general manager of the Denver Broncos of the National Football League (NFL). The history of the Denver Broncos American football club began when the team was chartered a member of the American Football League in 1960.  The Broncos have played in the city of Denver, Colorado throughout their entire history.  The Broncos did not win any titles as members of the AFL.  Since the 1970 AFL–NFL merger, the Broncos have won 15 division titles, and played in eight Super Bowls, following the 1977, 1986, 1987, 1989, 1997, 1998, 2013, and 2015 seasons.  They won Super Bowl XXXII, Super Bowl XXXIII and Super Bowl 50.  Their most famous player is former quarterback John Elway, starting quarterback in five Super Bowls and holder of many NFL records.  The Broncos currently play in the National Football League's AFC West division.  Their current leadership includes owner Pat Bowlen, CEO Joe Ellis, VP John Elway, head coach Vance Joseph, and quarterback, Trevor Siemian. The 1999 Denver Broncos season was the team's 40th year in professional football and its 30th with the National Football League (NFL).  After winning its second consecutive Super Bowl with a win over the Atlanta Falcons in Super Bowl XXXIII in Miami, the team suffered the retirement of Super Bowl XXXIII MVP quarterback John Elway during the off-season.  Elway had spent his entire career with the Denver Broncos, and much of the focus in the weeks leading up to the season centered on the void left by Elway's departure.  Head Coach Mike Shanahan announced that third-round 1998 draft pick Brian Griese, son of Miami Dolphins Quarterback Bob Griese, would take the reins of the offense, passing over veteran and credible back-up QB Bubby Brister.
Answer: John Elway