Complex sentence: Malaysian Airlines Flight MH370 goes missing off the northern coast of Malaysia en route to Bejing from Kuala Lumpur, 239 people on board are presumed dead; the plane is believed to have crashed in the Southern Indian Ocean off the coast of Australia.
Split into simpler sentences: Malaysian Airlines Flight MH370 goes missing off the northern coast of Malaysia en route to Bejing from Kuala Lumpur, 239 people on board are presumed dead. The plane is believed to have crashed in the Southern Indian Ocean off the coast of Australia.