Heat olive oil in a skillet over medium heat, and sauté onion and green pepper about 5 minutes, until tender. Mix in garlic, and continue to cook and stir, about 2 minutes. Mix in artichoke hearts with reserved liquid, capers with reserved liquid, and olives. Stir in tomatoes, wine, lemon juice, and 1 cup water (or enough to attain desired thickness). Season with sumac powder, red pepper, basil, cumin, ginger, and pepper.