เมื่อ Ilie Nrustase เอาชนะรองแชมป์ Peter Fleming ได้ในปีไหน?
When Ilie Năstase beat runner-up Peter Fleming what year was it?
df = pd.DataFrame(columns=['year', 'champion', 'runner_up'])
df.loc[(df['champion'] == 'ilie năstase') & (df['runner_up'] == 'peter fleming'), 'year'].count()