Original sentence: Margarines high in mono- or poly-unsaturated fats, which are made from safflower, sunflower, soybean, cottonseed, rapeseed, or olive oil
Edited sentence: Margarines high in mono- or poly-unsaturated fats, which are made from safflower, sunflower, soybean, cottonseed, rapeseed, or olive oil, and which are said to be healthier than butter or other types of margarine