an Entity references as follows:
The 7th Liberty 500-Mile Sweepstakes was held at the Indianapolis Motor Speedway on Saturday, May 31, 1919. After a two-year hiatus due to World War I, the Indianapolis 500 returned to competition in 1919. Howdy Wilcox won, accompanied by riding mechanic Leo Banks. More than half the field (19 of 33 cars) consisted of rookie drivers, tied for the most ever, excluding the inaugural race where all 40 cars were considered "rookies." Ralph DePalma, the 1915 winner, and the driver who suffered a defeat in 1912, again put in a strong performance. DePalma led 93 of the first 102 laps, and drove the first half at record-breaking speed. Tire problems, however, necessitated a long pit stop, and DePalma finished in 6th place.