ค้นหาชื่อผู้ผลิตที่ผลิตรถยนต์บางคันในปี 1970 บ้างไหม?
Find the name of the makers that produced some cars in the year of 1970?
model_list = pd.DataFrame({'Maker': list_of_maker_ids, 'model': list_of_models}); car_makers = pd.DataFrame({'Maker': list_of_maker_ids, 'Id': list_of_ids}); cars_data = pd.DataFrame({'id': list_of_ids, 'year': list_of_years}); car_names = pd.DataFrame({'model': list_of_models, 'MakeId': list_of_makeids})
car_makers[car_makers['Id'].isin(model_list[model_list['model'].isin(car_names[car_names['MakeId'].isin(cars_data[cars_data['year'] == 1970]['id'])]['model'])]['Maker'])]['Maker']