Put olives in saucepan, cover with water. Bring to a boil. Drain cover with water again and bring to a boil and drain again. In another saucepan, mix tomatoes with oil, garlic and tomato paste. Simmer for 5 minutes. Add olives, lemon slices, spices, salt and pepper. Mix well. Add a little water and simmer over low heat until the water is absorbed. Remove lemon and serve.