Original sentence: , the police gathered the surrendered students in the football arena, where men and women were forced to lie on their stomach and undress to their underwear.Students trying to flee by diving into the Chao Phraya River were shot at by naval vessels
Edited sentence: , the police gathered the surrendered students in the football arena, where men and women were forced to lie on their stomach and undress.Students trying to flee by diving into the Chao Phraya River were shot at by Thai naval vessels