Question: when was the last time pistons won a championship
Answer: 2004

title: Detroit Pistons
text: and the Pistons became part of the merged league. Since moving to Detroit in 1957, the Pistons have won three NBA championships: in 1989, 1990 and 2004. The Detroit Pistons franchise was founded as the Fort Wayne Zollner Pistons, a National Basketball League (NBL) team, in Fort Wayne, Indiana. Owner Fred Zollner's Zollner Corporation was a foundry that manufactured pistons, primarily for car, truck, and locomotive engines. The Zollner Pistons were NBL champions in 1944 and 1945. They also won the World Professional Basketball Tournament in 1944, 1945 and 1946. In 1948, the team became the Fort Wayne Pistons, competing