Given the question: Information: - The Targa Florio was an open road endurance automobile race held in the mountains of Sicily near Palermo. Founded in 1906, it was the oldest sports car racing event, part of the World Sportscar Championship between 1955 and 1973. While the first races consisted of a whole tour of the island, the track length in the race's last decades was limited to the of the Circuito Piccolo delle Madonie, which was lapped 11 times. - Sports car racing is a form of circuit auto racing with sports cars that have two seats and enclosed wheels. They may be purpose-built (Prototype) or related to road-going models (Grand Touring). - The 1919 Grand Prix season saw the return of Grand Prix motor racing to both Europe after World War I , albeit not on the pre-war scale . No Grandes Epreuves were held but some other prestigious races like the Targa Florio was held . - The World Sportscar Championship was the world series run for sports car racing by the FIA from 1953 to 1992. What is the relationship between '1919 grand prix season' and 'auto racing'?
The answer is:
sport