Complex sentence: At dawn on July 12,1989, Arnaldo Tomas Ochoa Sanchez "El Moro", was executed by a firing squad at the military base known as "Tropas Especiales" in Baracoa, West Havana.
Split into simpler sentences: At dawn on July 12,1989, Arnaldo Tomas Ochoa Sanchez "El Moro", was executed by a firing squad. This took place in the military base known as "Tropas Especiales" in Baracoa, west Havana.