Complex sentence: According to advance reviews, the book alleges premarital sex and drug use, allegedly including conjecture that Sarah Palin is not the biological mother of her son, Trig Palin.
Split into simpler sentences: According to advance reviews, the book alleges premarital sex and drug use. The book is reportedly heavy on innuendo, including conjecture that Sarah Palin is not the biological mother of her son, Trig Palin.