I sold a parcel of land to an oil company for a pump station. I received a 1099-s for a down payment on the purchase. I received a 2nd 1099-s from the title company on closing for the original price. I also received a 3rd 1099-s from the oil company for an additional amount that they paid to get entrance to the land for an early start.  These 1099-s all were for the same piece of land. How should I show them on the form 4797?