input: Write a python function to create an instance of the Dog class and verify its attributes.
  assert str(create_dog_instance("Buddy", "Golden Retriever")) == "Name: Buddy, Breed: Golden Retriever"
  assert str(create_dog_instance("Max", "Bulldog")) == "Name: Max, Breed: Bulldog"
  assert str(create_dog_instance("Bella", "Beagle")) == "Name: Bella, Breed: Beagle"
output: def create_dog_instance(name, breed):
      class Dog:
          def __init__(self, name, breed):
              self.name = name
              self.breed = breed
              
          def __str__(self):
              return f"Name: {self.name}, Breed: {self.breed}"
      
      return Dog(name, breed)