Conversation so far:
who won the mlb world series in 2015
The Kansas City Royals won the MLB world series in 2015.
who are the kansas city royals
The Kansas City Royals are an American professional baseball team based in Kansas City, Missouri.
when were the kansas city royals founded
The Kansas City Royals were founded as an expansion franchise in 1969.

Question: has the team ever won the world series
Self-contained rewrite: have the kansas city royals ever won the world series