Original: Both races were held at the Tanaka International Aida circuit (now Okayama International Circuit), a slow, twisty 2.3-mile track deep in the countryside in Aida (near Kobe), Japan.
Simplified: Both races were held at the Tanaka International Aida circuit (now Okayama International Circuit), a 2.3-mile track in the countryside in Aida (near Kobe), Japan.