มณฑลที่ผู้แทนในคณะกรรมการ "การจัดสรร" มีชื่ออะไรบ้าง?
What are the names of the county that the delegates on "Appropriations" committee belong to?
df_election = pd.DataFrame(columns=['District', 'Committee']); df_county = pd.DataFrame(columns=['County_name', 'County_id'])
df_election[df_election['Committee'] == 'Appropriations'].merge(df_county, left_on='District', right_on='County_id')['County_name']