Task: Explanation
Input (English): Demolition derby is a motorsport usually presented at county fairs and festivals. While rules vary from event to event, the typical demolition derby event consists of five or more drivers competing by deliberately ramming their vehicles into one another. The last driver whose vehicle is still operational is awarded the victory. Demolition derbies originated in the United States and quickly spread to other Western nations. For example, Australia's first demolition derby took place in January 1963. Question: Union County Speedway hosts the motorsports that first took place in Australia in what year? Answer: 1963
Output (English): Demolition derby is a motorsport usually presented at county fairs and festivals.