Title: 2019–20 Liverpool F.C. season
Content:  the first English side to win the international treble of the UEFA Champions League, UEFA Super Cup and FIFA Club World Cup. Liverpool were unsuccessful in their defence of the UEFA Champions League, exiting the competition in the Round of 16 following a 4–2 defeat across two legs after extra time to Atlético Madrid. On 25 June, Liverpool clinched their nineteenth league title—the first since 1989–90 and the first during the Premier League era. Upon winning the league, Liverpool claimed the unusual achievement of winning the Premier League earlier than any other team by games played (with seven remaining) and later than any other 
Title: History of Liverpool F.C. (1985–present)
Content:  Cup, as Owen scored two goals in the last ten minutes to overturn a one-goal deficit to win the match against Arsenal 2–1. The final trophy the club won was the UEFA Cup. An own goal in the last minute of extra time by Delfí Geli secured a 5–4 victory over Spanish team Alavés. Liverpool finished the league in third place, securing a return to the European Cup (now the UEFA Champions League) for the first time since the Heysel Stadium disaster. Liverpool's participation in the UEFA Champions League in the 2001–02 season saw the club reach the quarter-finals, where they were eliminated by German team 
Title: History of Liverpool F.C. (1985–present)
Content:  nine matches, Liverpool scored 97 points, the third-highest total in the history of the English top-flight and the most points scored by a team without winning the title, and remained unbeaten at home for the second season running; their thirty league wins matched the club record for wins in a season. Liverpool reached the Champions League final for the second consecutive year after overcoming a 3–0 first-leg deficit by beating Barcelona 4–0 in the second leg at Anfield. In the 2019 final, Liverpool defeated Tottenham Hotspur 2–0 to secure the club's sixth European title and end a seven-year trophy drought. Liverpool's first game of the 
Title: Liverpool F.C.
Content:  successive Champions League finals in 2018 and 2019, with the club defeating Tottenham Hotspur 2–0 to win the 2019 UEFA Champions League Final. Liverpool beat Flamengo of Brazil in the final 1–0 to win the FIFA Club World Cup for the first time. Liverpool then went on to win the 2019–20 Premier League, winning their first top-flight league title in thirty years. The club set multiple records in the season, including winning the league with seven games remaining making it the earliest any team has ever won the title, amassing a club record 99 points, and achieving a joint-record 32 wins in a top-flight season.
Title: Liverpool F.C. in international football
Content:  the quarter-finals where they were eliminated 3–1 on aggregate to Real Madrid. Liverpool finished third in the 2020–21 Premier League, meaning the team qualified for the premier European competition for the fifth consecutive year. On 19 October 2021, Liverpool won 3–2 away to Atlético Madrid with Mohamed Salah scoring twice to become Liverpool's record goalscorer in the Champions League, surpassing the previous record of 30 goals by Steven Gerrard. On 7 December, Liverpool won 2–1 against AC Milan at the San Siro and became the first English club to win all six Champions League group games in the competition’s history.
Title: Liverpool F.C. in international football
Content:  Heysel Stadium disaster, following which the club was banned from European competitions for six seasons. Since being readmitted in 1991, they have qualified for the UEFA Champions League (the successor to the European Cup) thirteen times, the UEFA Europa League (the successor to the UEFA Cup) twelve times, and the (now-defunct) UEFA Cup Winners Cup twice. As a result of their victory in the 2005 UEFA Champions League Final, Liverpool won the European Champion Clubs' Cup trophy outright and were awarded a multiple winner badge. Only 2 teams have won more Champions Leagues than Liverpool – Real Madrid and A.C. Milan with 13 and 7 respectively. Liverpool's total of 
Title: Football in London
Content:  London club to win the Premier League in the 1997–98 season. They were also the first London club to reach the European Cup/UEFA Champions League final, which they did in the 2005–06 season, eventually losing 1–2 to Barcelona in the final held in Paris. Chelsea are, to date, the only London club to win the UEFA Champions League, which they've won twice in 2012 and 2021. On 15 May 2013, Chelsea won the UEFA Europa League to become the fourth club and the first British side to win all three main UEFA club competitions. Chelsea are also the only London club to have 
Title: Liverpool F.C.
Content: European Cup/UEFA Champions League ; Winners (6): 1976–77, 1977–78, 1980–81, 1983–84, 2004–05, 2018–19 ; UEFA Cup ; Winners (3): 1972–73, 1975–76, 2000–01 ; European/UEFA Super Cup ; Winners (4): 1977, 2001, 2005, 2019 
Title: 2018–19 Liverpool F.C. season
Content:  The 2018–19 season was Liverpool Football Club's 127th season in existence and their 57th consecutive season in the top flight of English football. It was also the club's 27th consecutive season in the Premier League. The club also competed in the UEFA Champions League, the FA Cup and the EFL Cup. The season covered the period from 1 July 2018 to 30 June 2019. Liverpool finished the Premier League season as runners-up to Manchester City, to whom they suffered their only league defeat of the season, scoring 97 points, the then third-highest total in the history of the English top division and the most points scored by a team without winning the title. They remained unbeaten at home in the league for the second season in a row and matched the club record of 30 league wins in a season. In the UEFA Champions League, Liverpool reached the final for the second consecutive year, winning 2–0 against Tottenham Hotspur to secure the club's sixth win in the competition. However, success eluded Liverpool in domestic cup competitions as they exited both the FA Cup and EFL Cup in the third round.
Title: Liverpool F.C. in international football
Content:  the 2018–19 UEFA Champions League. Liverpool reached the Champions League final for the second consecutive year in 2018–19 after overcoming a 3–0 first-leg deficit by beating Barcelona 4–0 in the second leg at Anfield, with the match being considered one of the greatest Champions League comebacks of all-time. This time, the Reds won the final 2–0, beating fellow English side Tottenham Hotspur, thus securing the club's sixth European title and lifting their first European trophy since 2005. Liverpool went on to win the 2019 UEFA Super Cup after extra-time and penalties. It was their fourth title, placing them behind only 

Question: when did liverpool fc last win the champions league?
Answer: 2006 FA Cup Final.