Question: Who's playing in the world series 2018?
Disambiguated questions and answers: question: Who's playing in the world series 2017?
Who's playing in the world series 2016?
Who's playing in the world series 2015?
Who's playing for the American league in the world series 2018?
Who's playing for the National League in the world series 2018?
answer: Los Angeles Dodgers and the Houston Astros
Chicago Cubs and Cleveland Indians
New York Mets and Kansas City Royals
Boston Red Sox
Los Angles Dodgers
Natural Questions answer: Los Angeles Dodgers
Boston Red Sox (from the Wikipedia article "2018 Major League Baseball season")