input: Write a Python function to create a Car object and return its description.
  assert create_car_description("Toyota", "Corolla", "blue") == "The Toyota Corolla is blue."
  assert create_car_description("Honda", "Civic", "red") == "The Honda Civic is red."
  assert create_car_description("Ford", "Mustang", "black") == "The Ford Mustang is black."
output: def create_car_description(make, model, color):
      return f"The {make} {model} is {color}."