สนามใดในออสเตรียที่มีเส้นโค้ง Bobsleigh-skeleton ด้วยคะแนน 14%
Which track in Austria has Bobsleigh-skeleton curves with a grade of 14%?
df = pd.DataFrame(columns=['track', 'bobsleigh_skeleton_curves', 'country'])
df[(df['bobsleigh_skeleton_curves'] == '14%') & (df['country'] == 'Austria')]['track']