Question: Who played in the world series in 1989?
Answer: San Francisco Giants
Oakland Athletics
Disambiguated questions and answers: question: Who won the world series in 1989?
Who lost the world series in 1989?
answer: Athletics
Oakland Athletics
he A's
Oakland
San Francisco Giants
San Francisco
Giants
Natural Questions answer: San Francisco Giants
Oakland Athletics (from the Wikipedia article "1989 World Series")