Complex sentence: A storm in 1959 caused a shipwreck near southern Oman, resulting in the loss of the crew of 141; another storm in December 1998 killed 18 due to a shipwreck.
Split into simpler sentences: A storm in 1959 caused a shipwreck near southern Oman, resulting in the loss of the crew of 141. Another storm in December 1998 killed 18 due to a shipwreck.