Input (grade 12): The Â # 150 proceeds from the first house financed the building of the next two houses on the same plot of land, one of which was kept by the Laing Family to live in.
Output (grade 5): The Â # 150 proceeds from the first house financed the building of the next two houses on the same plot of land. One of these houses was kept by the Laing Family to live in.