old_contents: from django.db import models
  
  class Organization(models.Model):
      name = models.CharField(max_length=255)
      location = models.CharField(max_length=255)
      def __str__(self):
          return self.name
  
new_contents: from django.db import models
  
  class Organization(models.Model):
      name = models.CharField(max_length=255)
      location = models.CharField(max_length=255)
      description = models.CharField(max_length=225)
      def __str__(self):
          return self.name
  
subject: add "description" to organization admin