Complex sentence: Death by elephant is still common in parts of Africa and South Asia where humans and elephants co-exist: in Sri Lanka alone, 50--100 people are killed annually in clashes between humans and elephants.
Split into simpler sentences: Death by elephant is still common in parts of Africa and South Asia where humans and elephants co-exist. In Sri Lanka alone, 50--100 people are killed annually in clashes between humans and elephants.