class Car:
    def __init__(self, brand, model, year):
        self._brand = brand
        self._model = model
        self._year = year

    def get_info(self):
        return f"The car is made by {self._brand}, its model is {self._model} and it was made in {self._year}"

    def change_production_year(self, new_year):
        self._year = new_year
        return f"The production year of {self._brand} {self._model} was changed to {self._year}"


car_1 = Car('Mercedes', 'S-class', '2024')
car_2 = Car('Audi', 'RS7', '2024')

print(car_1.get_info())
print(car_2.change_production_year(2025))