claim: Yin and yang show a balance between magnetized entities.
evidence: The 1971 Islip 250 was a NASCAR Winston Cup Series -LRB- now Monster Energy NASCAR Cup Series -RRB- race that occurred on July 15 , 1971 , at Islip Speedway in the American community of Islip , New York .. Islip Speedway. Islip Speedway. NASCAR. NASCAR. Winston Cup Series. Sprint Cup Series. American. United States. Two black racers were involved in this race -LRB- Wendell Scott and George Wiltshire -RRB- .