Question: Who won the world baseball classic this year?

Disambiguated questions and answers:
context: The first qualifier round of the 2017 World Baseball Classic aired in the United States and Puerto Rico on the MLB Network; and in Australia, New Zealand, and selected surrounding islands on ESPN.
question: Who won the world baseball classic in 2017?
short_answers: United States

United States national baseball team
wikipage: World Baseball Classic

context: No context provided
question: Who won the world baseball classic in 2013?
short_answers: Dominican Republic national baseball team

Dominican Republic

context: The 2017 tournament returned to the format used in 2006, where both the first and second rounds were round-robin, though with the addition of tiebreaker games if needed. Colombia and Israel qualified for the first time, with Israel, using a roster mostly of Jewish American players, able to reach the second round in its WBC debut. Defending champion Dominican Republic extended its WBC winning streak to 11 games, dating to the 2013 tournament, before also being eliminated in the second round. The United States won its first WBC championship, defeating Japan and Puerto Rico in the semifinals and finals, respectively. Puerto Rico had been undefeated in the tournament before losing in the final, in game where its most important pitchers were not allowed to play due to WBC rules. In semifinals, Puerto Rico defeated Netherlands in a historic 4+ hour-game, while the United States defeated Japan in an unusually short game.
question: Who won the world baseball classic in 2009?
short_answers: Japan

Japan national baseball team
wikipage: World Baseball Classic

context: The first qualifier round of the 2017 World Baseball Classic aired in the United States and Puerto Rico on the MLB Network; and in Australia, New Zealand, and selected surrounding islands on ESPN.
question: Who won the world baseball classic in 2017?
short_answers: United States
wikipage: World Baseball Classic

context: No context provided
question: Who won the world baseball classic in 2013?
short_answers: Dominican Republic

context: The 2017 tournament returned to the format used in 2006, where both the first and second rounds were round-robin, though with the addition of tiebreaker games if needed. Colombia and Israel qualified for the first time, with Israel, using a roster mostly of Jewish American players, able to reach the second round in its WBC debut. Defending champion Dominican Republic extended its WBC winning streak to 11 games, dating to the 2013 tournament, before also being eliminated in the second round. The United States won its first WBC championship, defeating Japan and Puerto Rico in the semifinals and finals, respectively. Puerto Rico had been undefeated in the tournament before losing in the final, in game where its most important pitchers were not allowed to play due to WBC rules. In semifinals, Puerto Rico defeated Netherlands in a historic 4+ hour-game, while the United States defeated Japan in an unusually short game.
question: Who won the world baseball classic in 2009?
short_answers: Japan
wikipage: World Baseball Classic

Long answers:
knowledge: content: The World Baseball Classic (WBC) is an international baseball tournament sanctioned from 2006 to 2013 by the International Baseball Federation (IBAF) and after 2013 by World Baseball Softball Confederation (WBSC) in partnership with Major League Baseball (MLB).
wikipage: World Baseball Classic
long_answer: The World Baseball Classic (WBC) is an international baseball tournament sanctioned from 2006 to 2013 by the International Baseball Federation (IBAF) and after 2013 by World Baseball Softball Confederation (WBSC) in partnership with Major League Baseball (MLB). In 2009, Japan won the World Baseball Classic. In 2013, the Dominican Republic won the World Baseball Classic. In 2017, the United States won the World Baseball Classic.

long_answer: United States won the world baseball classic in 2017. Japan won in 2009, and the Dominican Republic won in 2013.