Complex sentence: The house itself comprises four 80 ton pods which rest on reinforced concrete stems of 14 to 20 feet in height which fan out from three feet in diameter where they connect to the pods to five feet at the base.
Split into simpler sentences: The house itself comprises four 80 ton pods which rest on reinforced concrete stems of 14 to 20 feet in height. These fan out from three feet in diameter where they connect to the pods to five feet at the base.