Russell James Liberman (September 12, 1945 - September 9, 1977) was a United States drag racer from Pennsylvania, known as "Jungle Jim". He was named #17 on the list of the Top 50 NHRA drivers. Liberman was known for driving backwards at 100 mph (160 km/h) after doing his burnout. Using only the above description and what you know about the world, "Russell Liberman is a top 50 drag racer" is definitely correct, incorrect, or inconclusive? 