คู่ต่อสู้เมื่อเกิน 1 รอบด้วยสถิติ 12-7 คือใคร?
Who was the opponent when he went more than 1 round with a record of 12-7?
df = pd.DataFrame(columns=['opponent', 'round', 'record'])
df[(df['round'] > '1') & (df['record'] == '12-7')]['opponent']