Complex sentence: On 12 January 2008,12 km off the coast of Venezuela, some fishermen found the body of a man; after having performed the autopsy, the doctors determined that it was the corpse of the co-pilot, the 37 year-old Osmel Alfredo Avila Otamendi.
Split into simpler sentences: On 12 January 2008, some fishermen found the body of a man 12 kilometres off the coast of Venezuela. After having performed the autopsy, the doctors determined that it was the corpse of the co-pilot, the 37 year-old Osmel Alfredo Avila Otamendi.