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 20 · column 2 of 6 · from the scan, no model involved

Army ants are the most important predators in the tropical forests of Central and South America, killing every animal in their path that can’t escape. One colony can kill more than one million animals per week, filling the same niche as a large predator, Williams says. Some bird species take advantage of the great disturbance the ants cause in the rain forest when on the move by
96.9%