Question: Prior to 2019 when was the last time Ken Lacy's team went to the Superbowl?

full_context: Document 1: Ken Lacy: Ken Lacy is a former professional NFL football player who played running back for four seasons for the Kansas City Chiefs. Lacy also played for the 1983 USFL Champion Michigan Panthers.
Document 2: 1969 Kansas City Chiefs season: The 1969 Kansas City Chiefs season was the team's 10th, their 7th in Kansas City, and also their final season in the American Football League. It resulted in an 11 -- 3 record and a 23 -- 7 victory in Super Bowl IV over the NFL's heavily favored Minnesota Vikings. The team beat their rivals, the Oakland Raiders in the final AFL Championship Game, claiming their third AFL Championship in franchise history. The Chiefs were coached by Hank Stram, led by quarterback Len Dawson and a powerful defense led by Bobby Bell, Willie ``Contact ''Lanier, Buck Buchanan and Curley Culp. The Chiefs' defense became the fourth defense in the history of pro football to lead its league in fewest rushing yards, fewest passing yards and fewest total yards. The Chiefs were the second AFL team to win the Super Bowl and last AFL team to do so before the AFL - NFL Merger in the following season.
Document 3: History of the National Football League championship: From 1966 -- 1969 prior to the merger in 1970, the NFL and the AFL agreed to hold an ultimate championship game, first called the AFL - NFL World Championship Game and later renamed the Super Bowl after 1968. Following the merger in 1970, the Super Bowl name continued as the game to determine the NFL champion. The most important factor of the merger was that all ten AFL teams joined the NFL in 1970 and every AFL championship game and record is included in NFL record books. The old NFL Championship Game became the NFC Championship Game, while the old AFL Championship Game became the AFC Championship Game. The NFL lists the old AFL / NFL championship games with ``new ''AFC / NFC championship games in its record books. The Green Bay Packers have won the most championships with 13 total (9 NFL championships pre-merger, four (4) Super Bowl championships). The Packers are also the only team to win three consecutive championships, having done so twice (1929 -- 1931, 1965 -- 1967). The Chicago Bears have won the second most overall championships with nine (9) (eight NFL championships, one Super Bowl championship).
Document 4: National Football League Rookie of the Year Award: Season Player Team Position Ref 2013 Lacy, Eddie Eddie Lacy Green Bay Packers Running back 2014 Beckham Jr., Odell Odell Beckham Jr. New York Giants Wide receiver 2015 Gurley, Todd Todd Gurley St. Louis Rams Running back 2016 Elliott, Ezekiel Ezekiel Elliott Dallas Cowboys Running back
Document 5: List of Super Bowl champions: Before the 1970 merger between the American Football League (AFL) and the National Football League (NFL), the two leagues met in four such contests. The first two were marketed as the ``AFL -- NFL World Championship Game '', but were also casually referred to as`` the Super Bowl game'' during the television broadcast. Super Bowl III in January 1969 was the first such game that carried the ``Super Bowl ''moniker in official marketing, the names`` Super Bowl I'' and ``Super Bowl II ''were retroactively applied to the first two games. The NFC / NFL leads in Super Bowl wins with 26, while the AFC / AFL has won 25. Nineteen different franchises, including teams that relocated to another city, have won the Super Bowl.
Document 6: Carlos Carson: Carlos Andre Carson (born December 28, 1958) is a former professional American football player drafted by the Kansas City Chiefs in the fifth round of the 1980 NFL Draft. A , 184 lb wide receiver from Louisiana State University, Carson played in 10 NFL seasons from 1980 to 1989. His best year came during the 1983 season when he caught 80 receptions for 1,351 yards and seven touchdowns. During that same season, Carson had the second most receiving yards in the NFL, only behind Philadelphia Eagles receiver Mike Quick with 1,409 yards.
Document 7: Green Bay Packers: The Packers have won 13 league championships, the most in NFL history, with nine pre-Super Bowl NFL titles in addition to four Super Bowl victories. The Packers won the first two Super Bowls in 1967 and 1968 and were the only NFL team to defeat the American Football League (AFL) prior to the AFL -- NFL merger. The Vince Lombardi Trophy is named after the Packers' coach Lombardi, who guided them to their first two Super Bowls. Their two additional Super Bowl wins came in 1997 and 2011.
Document 8: Deron Cherry: Deron Leigh Cherry (born September 12, 1959) is a retired professional American football free safety who played for the Kansas City Chiefs from 1981 to 1991. Deron was a free safety and punter at Rutgers University. In 1979, he was named the team’s MVP. In 1979 and 1980, Cherry earned AP All-East honors. In 1981, he was signed by the Kansas City Chiefs, as a free agent punter, but was released in the final cutdown. Cherry rejoined the club in late September as a safety, and made his first interception in October against the Oakland Raiders.
Document 9: Kansas City Chiefs: The Chiefs have won three AFL championships, in 1962, 1966, and 1969 and 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 and appearance 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.
Document 10: Curtis Bledsoe: Curtis Kemp Bledsoe (born March 19, 1957 in Odessa, Texas) is a former professional American football player who played fullback, halfback, and running back. He played in the National Football League for the Kansas City Chiefs in 1981 and 1982. He later played for the Arizona Wranglers, Washington Federals and Orlando Renegades of the USFL. Bledsoe played college football for
Document 11: Super Bowl IV: Super Bowl IV, the fourth and final AFL - NFL World Championship Game in professional American football, was played on January 11, 1970, at Tulane Stadium in New Orleans, Louisiana. The American Football League (AFL) champion Kansas City Chiefs defeated the National Football League (NFL) champion Minnesota Vikings by the score of 23 -- 7. This victory by the AFL squared the Super Bowl series with the NFL at two games apiece. The two leagues merged into one after the season.
Document 12: Kansas City Chiefs: Kansas City Chiefs Current season Established August 14, 1959; 58 years ago (August 14, 1959) First season: 1960 Play in and headquartered in Arrowhead Stadium Kansas City, Missouri Logo Wordmark League / conference affiliations American Football League (1960 -- 1969) Western Division (1960 -- 1969) National Football League (1970 -- present) American Football Conference (1970 -- present) AFC West (1970 -- present) Current uniform Team colors Red, Gold, White Mascot Warpaint (1963 -- 1988, 2009 -- present) K.C. Wolf (1989 -- present) Personnel Owner (s) Hunt family Chairman Clark Hunt CEO Clark Hunt President Mark Donovan General manager Brett Veach Head coach Andy Reid Team history Dallas Texans (1960 -- 1962) Kansas City Chiefs (1963 -- present) Team nicknames Redwood Forest (Defense, 1969 -- 1971) Championships League championships (2) † AFL Championships (pre-1970 AFL -- NFL merger) (3) 1962, 1966, 1969 AFL -- NFL Super Bowl championships (1) 1969 (IV) Conference championships (0) Division championships (10) AFL West: 1962, 1966 AFC West: 1971, 1993, 1995, 1997, 2003, 2010, 2016, 2017 † - Does not include the AFL or NFL championships won during the same seasons as the AFL - NFL Super Bowl championships prior to the 1970 AFL - NFL Merger Playoff appearances (20) AFL: 1962, 1966, 1968, 1969 NFL: 1971, 1986, 1990, 1991, 1992, 1993, 1994, 1995, 1997, 2003, 2006, 2010, 2013, 2015, 2016, 2017 Home fields Cotton Bowl (1960 -- 1962) Municipal Stadium (1963 -- 1971) Arrowhead Stadium (1972 -- present)
Document 13: Tracy Rogers: Tracy Darin Rogers (born August 13, 1967 in Taft, California) is a former professional American football player who played linebacker for seven seasons for the Kansas City Chiefs.
Document 14: Barry Sanders: Barry Sanders (born July 16, 1968) is a former American football running back. He played professionally for the Detroit Lions of the National Football League (NFL). A Pro Bowl invitee in each of his ten NFL seasons and two-time NFL Offensive Player of the Year, Sanders led the league in rushing yards four times and established himself as one of the most elusive runners in pro football with his quickness and agility. In 2007, he was ranked by NFL Network's "NFL Top 10" series as the most elusive runner in NFL history, and also topped its list of greatest players never to play in a Super Bowl. He is often regarded as one of the greatest running backs in NFL history.
Document 15: Kansas City Chiefs: The Chiefs have won three AFL championships, in 1962, 1966, and 1969 and 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 and appearance 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 (the first AFL team to do so) and the first to appear in the championship game in two different decades.
ground_truth: January 11, 1970
sub_queries: Ken Lacy >> member of sports team Answer: Kansas City Chiefs
when was the last time Kansas City Chiefs went to the superbowl Answer: January 11, 1970