Original sentence: Monterrosa distinguished himself preceeding his 1963 graduation from the Academia Militar Gerardo Barrios military academy.The Atlacatl Battallion was held responsible for the El Mozote Massacre
Edited sentence: Monterrosa distinguished himself preceding his 1963 graduation from the Academia Militar Gerardo Barrios military academy.The Atlacatl Battalion was held responsible for the El Mozote Massacre