Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This book was the seventh extinction

We, a group of high school students in North Carolina, read The Sixth Extinction as part of a class assignment. The book starts out very interesting, but progressively becomes very cut and dry. For someone looking for an interestiong story, this is not the book for you. On the other hand, it does give detailed opinions on many different theories. Throughout the book, Leakey bombards the reader with many different theories and also with scientific information. It fully informs the reader of Leakey's opinions, but it is not a leisurely read. It is very slow and it doesn't grasp on to the reader's attention.