รถยนต์รุ่นใดบ้างที่ผลิตหลังปี 1980?
Which distinct car models are the produced after 1980?
cars_data = pd.DataFrame({'id': list_of_ids, 'year': list_of_years}); model_list = pd.DataFrame({'model': list_of_models}); car_names = pd.DataFrame({'model': list_of_models, 'MakeId': list_of_makeids})
model_list[model_list['model'].isin(car_names[car_names['MakeId'].isin(cars_data[cars_data['year'] > 1980]['id'])]['model'])]['model'].unique()