an Entity references as follows:
In North American auto racing, a green–white–checker finish (GWC) is a racing restart procedure one in which the race is restarted from a caution period with 2 laps remaining. When the race distance is extended to accommodate such a finish, it is also sometimes known as an overtime finish. The name alludes to three racing flags: * green flag: shown to start or restart the race. * white flag: shown at the start of the last lap * checkered flag: shown at the finish of the race