ผลลัพธ์ของผู้เล่นคนใดคือ T6 ใน PGA Ch., T4 ใน Masters และ T8 ใน US Open
Which player's results were T6 in the PGA Ch., T4 in the Masters and T8 at the U.S. Open?
df = pd.DataFrame(columns=['player', 'us_open', 'pga_ch', 'masters'])
df[(df['pga_ch'] == 'T6') & (df['masters'] == 'T4') & (df['us_open'] == 'T8')]['player']