Player ที่มีประสบการณ์ NBA 4 ปีมีสัญชาติอะไร
What is the Nationality of the G Player with 4 years NBA Experience?
df = pd.DataFrame(columns=['nationality', 'pos', 'years_of_nba_experience_', 'a_'])
df[(df['years_of_nba_experience_[a_]'] == '4') & (df['pos'] == 'g')]['nationality']