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

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
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
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
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
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

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.