Question: What Tennessee county contains the city where the 1999 Liberty Bowl was held?

Context paragraphs:
1999 Liberty Bowl: The 1999 AXA Liberty Bowl was a postseason college football game played between the Colorado State Rams and the Southern Miss Golden Eagles on December 31, 1999, at Liberty Bowl Memorial Stadium in Memphis, Tennessee.  Southern Miss won the game 23–17; the game was highlighted by Southern Miss's strong defense, which scored two touchdowns and held Colorado State scoreless in the second half.

2016 Liberty Bowl (January): The 2016 Liberty Bowl was a post-season American college football bowl game played on January 2, 2016 at Liberty Bowl Memorial Stadium in Memphis, Tennessee.  The 57th edition of the Liberty Bowl featured the Kansas State Wildcats of the Big 12 Conference against the Arkansas Razorbacks of the Southeastern Conference.  It began at 2:20 p.m. CST and aired on ESPN.  It was one of the 2015–16 bowl games that concluded the 2015 FBS football season.  Sponsored by automobile parts and accessories store AutoZone, it is officially known as the AutoZone Liberty Bowl.

2010 Liberty Bowl (December): The 2010 Liberty Bowl, also known as Autozone Liberty Bowl, was the fifty-second edition of the college football bowl game, and was played at Liberty Bowl Memorial Stadium in Memphis, Tennessee.  The game started at 3:30 PM US EST on December 31, 2010.  The game was telecast on ESPN and matched up the Georgia Bulldogs of the SEC against the University of Central Florida Knights, the C-USA champions.

2005 Liberty Bowl: The 2005 AutoZone Liberty Bowl was a post-season college football bowl game between the Fresno State Bulldogs and the Tulsa Golden Hurricane on December 31, 2005, at Liberty Bowl Memorial Stadium in Memphis, Tennessee.  In a closely contested game which went back and forth Tulsa defeated Fresno State 31-24.  It was the forty-seventh time the Liberty Bowl had been played and the final game of the 2005 NCAA Division I-A football season for both teams.

2016 Liberty Bowl (December): The 2016 Liberty Bowl was a post-season American college football bowl game played on December 30, 2016 at Liberty Bowl Memorial Stadium in Memphis, Tennessee.  The 58th edition of the Liberty Bowl featured the Georgia Bulldogs of the Southeastern Conference against the TCU Horned Frogs of the Big 12 Conference.  It was one of the 2016–17 bowl games concluding the 2016 FBS football season.  Sponsored by automobile parts and accessories store AutoZone, it was officially known as the AutoZone Liberty Bowl.

2012 Liberty Bowl: The 2012 AutoZone Liberty Bowl was a post-season American college football bowl game held on December 31, 2012 at the Liberty Bowl Memorial Stadium in Memphis, Tennessee in the United States.  The 54th edition of the Liberty Bowl began at 2:30 p.m. CST and aired on ESPN.  It featured the Iowa State Cyclones from the Big 12 Conference against the Conference USA champion Tulsa Golden Hurricane and was the final game of the 2012 NCAA Division I FBS football season for both teams.  The Golden Hurricane advanced to the game by virtue of winning the 2012 Conference USA Football Championship Game, while the Cyclones were also eligible for the bowl game due to their 6–6 regular-season record.  The bowl was a rematch as the two teams had previously met on September 1 at the Cyclones' home of Jack Trice Stadium in Ames, Iowa; Iowa State won that game, 38–23.

Memphis, Tennessee: Memphis is a city in the southwestern corner of the U.S. state of Tennessee and the county seat of Shelby County.  The city is located on the fourth Chickasaw Bluff, south of the confluence of the Wolf and Mississippi rivers.

2014 Liberty Bowl: The 2014 Liberty Bowl was an American college football bowl game played on December 29, 2014 at Liberty Bowl Memorial Stadium in Memphis, Tennessee.  The 56th edition of the Liberty Bowl, it featured the Texas A&M Aggies of the Southeastern Conference and the West Virginia Mountaineers of the Big 12 Conference.  It began at 1:00 p.m. CST and aired on ESPN.  It was one of the 2014–15 bowl games that concludes the 2014 FBS football season.  Sponsored by automobile parts and accessories store AutoZone, it is officially known as the AutoZone Liberty Bowl.

2013 Liberty Bowl: The 2013 Liberty Bowl was an American college football bowl game that was played on December 31, 2013 at Liberty Bowl Memorial Stadium in Memphis, Tennessee.  The 55th edition of the Liberty Bowl, it featured the Mississippi State Bulldogs of the Southeastern Conference and the Rice Owls, the champions of Conference USA.  It began at 3:00 p.m. CST and aired on ESPN.  It was one of the 2013–14 bowl games that concluded the 2013 FBS football season.  Sponsored by automobile parts and accessories store AutoZone, it was officially known as the AutoZone Liberty Bowl.  Mississippi State defeated Rice by a score of 44–7.

1974 Tennessee Volunteers football team: The 1974 Tennessee Volunteers football team (variously "Tennessee", "UT" or the "Vols") represented the University of Tennessee in the 1974 NCAA Division I football season.  Playing as a member of the Southeastern Conference (SEC), the team was led by head coach Bill Battle, in his fifth year, and played their home games at Neyland Stadium in Knoxville, Tennessee.  They finished the season with a record of seven wins, three losses and two ties (7–3–2 overall, 2–3–1 in the SEC).  At season’s end, Tennessee won the [1974 Liberty Bowl|Liberty Bowl]] over Maryland.  For the season, the Volunteers offense scored 211 points while the defense allowed 181 points.

Supporting paragraphs: 1999 Liberty Bowl Memphis, Tennessee
Answer: Shelby County