Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: The introduction is the best part!

The introduction to this book is an informative piece about various pin-up artists of the WWII era; however, most of the book was a scrapbook style work that left much to be desired. The main fault with the display of images was that there was no way to tell which artists created which images. Another drawback was how "racy" some of the images were. This significantly limits the appropraite audience for this book.