Complex sentence: Sebelius was born in Norton, Kansas, the son of Elizabeth Adeline (née Roberts) and Keith George Sebelius, a United States congressman from Kansas.
Split into simpler sentences: Sebelius was born in Norton, Kansas, the son of Elizabeth Adeline (née Roberts) and Keith George Sebelius. Sebelius' father, Keith Sebelius, served as a United States congressman from Kansas.