Which county do the delegates on "Appropriations" committee belong to? Give me the county names.
SELECT T1.County_name FROM county AS T1 JOIN election AS T2 ON T1.County_id  =  T2.District WHERE T2.Committee  =  "Appropriations"
SELECT T1.County_name FROM county AS T1 JOIN election AS T2 ON T1.County_id  =  T2.District WHERE T2.Committee  =  "Appropriations"
[{'County_name': 'Howard'}, {'County_name': 'Baltimore County'}, {'County_name': 'Mansfield'}]