Question: When was the last time chiefs won a superbowl?

Disambiguated questions and answers:
context: No context provided
question: What date was the last time chiefs won a superbowl?
short_answers: February 2, 2020

context: On January 12, 2020 the Chiefs defeated the Houston Texans 51-31 in the AFC Divisional Game after falling behind 21-0 after the first quarter with Mahomes throwing for 5 touchdowns. The Chiefs hosted their second AFC Championship game in consecutive years facing the sixth-seed Tennessee Titans. On January 19, 2020, the Chiefs defeated the Titans 35-24 and advanced to Super Bowl LIV. This marked their first appearance in a Super Bowl since Super Bowl IV, 50 years earlier.
question: What super bowl was the last time chiefs won a superbowl?
short_answers: 54

Super Bowl LIV
wikipage: Kansas City Chiefs

context: The Chiefs have won three AFL championships, in 1962, 1966, and 1969. They became the second AFL team (after the New York Jets) to defeat an NFL team in an AFL–NFL World Championship Game, when they defeated the Minnesota Vikings in Super Bowl IV. The team's victory on January 11, 1970, remains the club's last championship game victory to date, and occurred in the final such competition prior to the leagues' merger coming into full effect. The Chiefs were also the second team, after the Green Bay Packers, to appear in more than one Super Bowl (and the first AFL team to do so) and the first to appear in the championship game in two different decades. Despite post-season success early in the franchise's history, winning five of their first six postseason games, the team struggled to find success in the playoffs for many years, including losing 10 of 11 playoff games from 1993 to 2017, which included an 8-game losing streak. Since, the Chiefs have won 3 of their last 4 playoff games including the 2019 AFC Championship game which helped the Chiefs to their first Super Bowl in 50 years.
question: When date was the last time chiefs won a superbowl in 1970?
short_answers: January 11, 1970
wikipage: Kansas City Chiefs

context: The Chiefs have won three AFL championships, in 1962, 1966, and 1969. They became the second AFL team (after the New York Jets) to defeat an NFL team in an AFL–NFL World Championship Game, when they defeated the Minnesota Vikings in Super Bowl IV. The team's victory on January 11, 1970, remains the club's last championship game victory to date, and occurred in the final such competition prior to the leagues' merger coming into full effect. The Chiefs were also the second team, after the Green Bay Packers, to appear in more than one Super Bowl (and the first AFL team to do so) and the first to appear in the championship game in two different decades. Despite post-season success early in the franchise's history, winning five of their first six postseason games, the team struggled to find success in the playoffs for many years, including losing 10 of 11 playoff games from 1993 to 2017, which included an 8-game losing streak. Since, the Chiefs have won 3 of their last 4 playoff games including the 2019 AFC Championship game which helped the Chiefs to their first Super Bowl in 50 years.
question: When edition was the last time chiefs won a superbowl in 1970?
short_answers: Super Bowl IV
wikipage: Kansas City Chiefs

Long answers:
knowledge: content: The Kansas City Chiefs are a professional American football team based in Kansas City, Missouri. They compete in the National Football League (NFL) as a member club of the league's American Football Conference (AFC) West division.
wikipage: Kansas City Chiefs

content: The American Football Conference (AFC) champion Kansas City Chiefs defeated the National Football Conference (NFC) champion San Francisco 49ers, 31–20. The game was played on February 2, 2020, at Hard Rock Stadium in Miami Gardens, Florida.
wikipage: Super Bowl LIV
long_answer: The Kansas City Chiefs are a professional American football team based in Kansas City, Missouri. They compete in the National Football League (NFL) as a member club of the league's American Football Conference (AFC) West division. The last time they won a Super Bowl was February 2, 2020, at Hard Rock Stadium in Miami Gardens, Florida, during Super Bowl LIV, when they defeated the San Francisco 49ers 31–20. They also won a Super Bowl on January 11, 1970, during Super Bowl IV, when they defeated the Minnesota Vikings.

knowledge: content: The Kansas City Chiefs are a professional American football team based in Kansas City, Missouri.
wikipage: Kansas City Chiefs
long_answer: The Kansas City Chiefs are a professional American football team based in Kansas City, Missouri. They became the second AFL team, after the New York Jets, to defeat an NFL team in an AFL–NFL World Championship Game, when they defeated the Minnesota Vikings in Super Bowl IV on January 11, 1970. Their first appearance in a Super Bowl since Super Bowl IV, 50 years earlier, was Super Bowl LIV, which they won on February 2, 2020.