Complex sentence: The incident took place about 70 miles northeast of the Somali capital, Mogadishu, when a group of Somali pirates boarded and captured the North Korean cargo ship Dai Hong Dan.
Split into simpler sentences: The incident took place about 70 miles northeast of the Somali capital, Mogadishu. A group of Somali pirates boarded and captured the North Korean cargo ship Dai Hong Dan.