sentences:  Of the rest of the land, or 40.7% is settled (buildings or roads), or 1.2% is either rivers or lakes and or 0.2% is unproductive land.Of the built up area, industrial buildings made up 4.6% of the total area while housing and buildings made up 21.3% and transportation infrastructure made up 9.3%.Power and water infrastructure as well as other special developed areas made up 1.3% of the area while parks, green belts and sports fields made up 4.1%.