ใครคือผู้แต่งบทเพลงของ gopal krishna และนักร้องร่วมของโซโล?
Who was the lyricist for gopal krishna and co singer of solo?
df = pd.DataFrame(columns=['lyricist', 'film_name', 'co_singer'])
df.loc[(df['film_name'] == 'Gopal Krishna') & (df['co_singer'] == 'Solo'), 'lyricist'].values[0]