Complex sentence: Jaina Solo Fel was a female human Jedi Knight who became the wife of Jagged Fel and was born the eldest child of Han Solo and Leia Organa Solo, the elder twin of Jacen by five minutes and the sister of Anakin Solo.
Split into simpler sentences: Jaina Solo Fel was the wife of Jagged Fel and the eldest child of Han Solo and Leia Organa Solo. She is also the elder twin of Jacen by five minutes and the sister of Anakin Solo.