Assertion: track's race | /r/AtLocation | its final lap
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Source sentences:
text: INDYCAR has a Yellow chequer rule, and NASCAR allows it (1) if a race is shortened because of curfew or darkness, (2) if the race is already on its final lap when the yellow must be waved, or (3) if there is a yellow implemented after the leader crosses the "overtime line" (usually located on the backstretch) during a valid green-white-checkered finish once the race has restarted.