input: Write a function to create a Person object and return its string representation.
  ```python
  assert create_person('Alice', 30, 'alice@example.com') == "Name: Alice, Age: 30, Email: alice@example.com"
  assert create_person('Bob', 25, 'bob@example.com') == "Name: Bob, Age: 25, Email: bob@example.com"
  assert create_person('Charlie', 22, 'charlie@example.com') == "Name: Charlie, Age: 22, Email: charlie@example.com"
output: def create_person(name, age, email):
      class Person:
          def __init__(self, name, age, email):
              self.name = name
              self.age = age
              self.email = email
          
          def __str__(self):
              return f"Name: {self.name}, Age: {self.age}, Email: {self.email}"
      
      person = Person(name, age, email)
      return str(person)