In A Large Skillet, Cook The Beef, Cabbage, Onion, Celery And Green Pepper Over Medium Heat Until Meat Is No Longer Pink And Vegetables Are Crisp-Tender; Drain. Stir In The Ketchup, Brown Sugar, Lemon Juice, Vinegar, Worcestershire Sauce, Mustard, Salt And Pepper. Cover And Simmer For 10 Minutes Or Until Cabbage Is Tender. Spoon 1/2 Cup Onto Each Roll.