Question: The National Stakes is a South Australian horse race held at a racecourse how many kilometers from the Adelaide city center?
Sentence (from "National Stakes (SAJC)"): The National Stakes is a South Australian Jockey Club Group 3 Thoroughbred horse race for horses aged two years old, at set weights with penalties, over a distance of 1200 metres, held annually at Morphettville Racecourse in Adelaide, Australia during the Autumn Carnival.
Relevant evidence: Yes