Question: Who won the nba finals in the last four years?

Disambiguated questions and answers:
context: The 2017 NBA Finals was the championship series of the National Basketball Association (NBA)'s 2016–17 season and conclusion of the season's playoffs. The Western Conference champion Golden State Warriors defeated the defending NBA champion and Eastern Conference champion Cleveland Cavaliers four games to one. This Finals was the first time in NBA history the same two teams had met for a third consecutive year. The Cavaliers sought to repeat as champions after winning the championship in 2016, while the Warriors won the first meeting in 2015. Golden State earned home court advantage with a 2016–17 regular season record of , while Cleveland finished the regular season with a record. The Warriors entered the 2017 Finals after becoming the first team in NBA playoff history to start , while the Cavaliers entered the 2017 Finals with a record during the first three rounds of the postseason. The Warriors' start in the playoffs is the most consecutive postseason wins in NBA history and their record is the best winning percentage () in NBA Playoff history.
question: Who won the 2017 NBA Finals?
short_answers: Golden State Warriors
wikipage: 2017 NBA Finals

context: The 2017 NBA Finals was the championship series of the National Basketball Association (NBA)'s 2016–17 season and conclusion of the season's playoffs. The Western Conference champion Golden State Warriors defeated the defending NBA champion and Eastern Conference champion Cleveland Cavaliers four games to one. This Finals was the first time in NBA history the same two teams had met for a third consecutive year. The Cavaliers sought to repeat as champions after winning the championship in 2016, while the Warriors won the first meeting in 2015. Golden State earned home court advantage with a 2016–17 regular season record of , while Cleveland finished the regular season with a record. The Warriors entered the 2017 Finals after becoming the first team in NBA playoff history to start , while the Cavaliers entered the 2017 Finals with a record during the first three rounds of the postseason. The Warriors' start in the playoffs is the most consecutive postseason wins in NBA history and their record is the best winning percentage () in NBA Playoff history.
question: Who won the 2016 NBA Finals?
short_answers: Cleveland Cavaliers
wikipage: 2017 NBA Finals

context: In 2014, James returned to the Cavaliers after four seasons in Miami. While the Heat had a 224–88 record during James' four-year tenure and won NBA titles in 2012 and 2013, the Cavaliers went 97–215 and missed the playoffs each season. The Cavaliers made several moves to build a championship-contender around James, most notably acquiring power forward Kevin Love from the Minnesota Timberwolves, which created what many fans and media referred to a "Big Three" with James, Love, and Irving. The Lebron-led Cavaliers made four consecutive finals appearances in from 2015 to 2018, all against the Golden State Warriors, winning in 2016. The 2016 NBA Championship marked the Cavaliers' first title in franchise history, as they became the first team to come back from a 3–1 deficit to win the Finals. It was also Cleveland's first championship in major professional sports since the 1964 Browns, signaling the end of the so-called Cleveland sports curse.
question: Who won the 2015 NBA Finals?
short_answers: Golden State Warriors
wikipage: Cleveland Cavaliers

context: The 2017 NBA Finals was the championship series of the National Basketball Association (NBA)'s 2016–17 season and conclusion of the season's playoffs. The Western Conference champion Golden State Warriors defeated the defending NBA champion and Eastern Conference champion Cleveland Cavaliers four games to one. This Finals was the first time in NBA history the same two teams had met for a third consecutive year. The Cavaliers sought to repeat as champions after winning the championship in 2016, while the Warriors won the first meeting in 2015. Golden State earned home court advantage with a 2016–17 regular season record of , while Cleveland finished the regular season with a record. The Warriors entered the 2017 Finals after becoming the first team in NBA playoff history to start , while the Cavaliers entered the 2017 Finals with a record during the first three rounds of the postseason. The Warriors' start in the playoffs is the most consecutive postseason wins in NBA history and their record is the best winning percentage () in NBA Playoff history.
question: Who won the nba finals in 2017?
short_answers: Golden State Warriors
wikipage: 2017 NBA Finals

context: No context provided
question: Who won the nba finals in 2016?
short_answers: Cavs

Cleveland Cavaliers

context: In 2014, James returned to the Cavaliers after four seasons in Miami. While the Heat had a 224–88 record during James' four-year tenure and won NBA titles in 2012 and 2013, the Cavaliers went 97–215 and missed the playoffs each season. The Cavaliers made several moves to build a championship-contender around James, most notably acquiring power forward Kevin Love from the Minnesota Timberwolves, which created what many fans and media referred to a "Big Three" with James, Love, and Irving. The Lebron-led Cavaliers made four consecutive finals appearances in from 2015 to 2018, all against the Golden State Warriors, winning in 2016. The 2016 NBA Championship marked the Cavaliers' first title in franchise history, as they became the first team to come back from a 3–1 deficit to win the Finals. It was also Cleveland's first championship in major professional sports since the 1964 Browns, signaling the end of the so-called Cleveland sports curse.
question: Who won the nba finals in 2015?
short_answers: Golden State Warriors
wikipage: Cleveland Cavaliers

Long answers:
knowledge: content: In this best-of-seven playoff series, the Eastern Conference champion Milwaukee Bucks defeated the Western Conference champion Phoenix Suns, 4–2, winning their first NBA championship in 50 years and their second title overall.
wikipage: 2021 NBA Finals

content: In this best-of-seven playoff series, the Western Conference champion Los Angeles Lakers defeated the Eastern Conference champion Miami Heat, 4–2, winning their first NBA championship in ten years.
wikipage: 2020 NBA Finals

content: In the best-of-seven playoff series held from May 30 through June 13, 2019, the Eastern Conference champion Toronto Raptors defeated the defending NBA champion and Western Conference champion Golden State Warriors, 4–2, earning the franchise its first NBA championship as well as the first win by an NBA team based outside the United States.
wikipage: 2019 NBA Finals

content: In this best-of-seven playoff, the defending NBA champion and Western Conference champion Golden State Warriors swept the defending Eastern Conference champion Cleveland Cavaliers four games to zero.
wikipage: 2018 NBA Finals
long_answer: There were several winners of the NBA Finals in the last four years. The Milwaukee Bucks won the 2021 NBA Finals, the Los Angeles Lakers won the 2020 NBA Finals, the Toronto Raptors won the 2019 NBA Finals, and the Golden State Warriors won the 2018 NBA Finals. The Warriors also won the 2015 and 2017 NBA Finals, while the Cleveland Cavaliers won the 2016 NBA Finals.

knowledge: content: The NBA Finals is the annual championship series of the National Basketball Association (NBA). The Eastern and Western conference champions play a best-of-seven game series to determine the league champion. The team that wins the series is awarded the Larry O'Brien Championship Trophy, which replaced the Walter A. Brown Trophy in 1983.
wikipage: NBA Finals
long_answer: The NBA Finals is the annual championship series of the National Basketball Association (NBA). The Eastern and Western conference champions play a best-of-seven game series to determine the league champion. The team that wins the series is awarded the Larry O'Brien Championship Trophy, which replaced the Walter A. Brown Trophy in 1983. The Golden State Warriors won the 2015 NBA Finals, the Cleveland Cavaliers won the 2016 NBA Finals, and the Golden State Warriors won the 2017 NBA Finals.