Preheat oven to 350°. Wash pumpkin, cut off top, scrape out seeds and discard. Place ground beef in large, deep skillet. Crumble and cook over medium high heat until evenly brown. Drain fat, add onion and garlic; sauté slightly. Add sugar, Italian herbs, salt, pepper, tomato juice and rice; mix thoroughly. Layer inside pumpkin with 1/3 of cabbage, green beans and beef and rice mixture. Repeat layers, replace lid and bake for 2 to 3 hours.