chicken vegetable soup recipe

Ingredients 2 tablespoons olive oil 1 onion, chopped 2 cloves garlic, minced 2 carrots, peeled and sliced 2 celery stalks, sliced 1 potato, peeled and diced 8 cups chicken broth 2 cups cooked chicken, shredded or diced 1 cup green beans, trimmed and cut into 1-inch pieces 1 cup corn kernels (fresh, canned, or frozen)