Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 12 · column 4 of 9 · from the scan, no model involved

sources, including beverages and food, which contain considerable water. The water we take into our bodies is only a “drop in the bucket” compared to what most of us use for various other purposes. It is estimated that the average American uses about 75 gallons of water each day.
93.1%