Add pork; cook 4 minutes or until browned, stirring occasionally.
Add onion, bell pepper, and celery; cook for 2 minutes, stirring occasionally. Stir in sage, salt, black pepper, tomatoes, and broth; bring to a boil. Cover, reduce heat, and simmer 30 minutes. Stir in pumpkin and corn; bring to a boil. Cover, reduce heat, and simmer 1 hour or until pumpkin is tender. Stir in grated rind.