Human: Who invented the game of curling? Assistant: 
Curling was invented in Scotland in the 18th century. The game was originally played on ice, but it was later adapted to be played on a sheet of sand. The game is played by two teams of four players. Each team has a skip, who throws the stone, and two players who sweep the ice. The object of the game is to get the stone to the other end of the sheet of ice, called the house, in the least number of throws.