Simmer Tomatoes In Broth For 15 Minutes. In Another Pan, Saute Onion, Carrots, And Celery In Olive Oil Until Onion Is Brown. Add Flour To Onion Mixture And Saute For 1 Minute More. Add Onion Mixture To Broth Along With Remaining Ingredients Except Rice. Simmer For 30 Minutes. Add Rice To Broth And Serve.