คู่ต่อสู้ในเกมที่มีผู้เข้าร่วม 48,000 คนคือใคร?
Who was the opponent in the game that was attended by 48,000 people?
df = pd.DataFrame(columns=['opponent_number', 'attendance'])
df.loc[df['attendance'] == '48,000', 'opponent_number']