Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Terrible

Personally I think that this is the worst book in the series. When Jake was ranting on about the Yeerk invasion he said to believe it was true it was futile, futile, I was tolerant but then it grew worse when Marco's jokes were getting really, really bad. And when Marco's jokes get really bad something's got to be wrong. Even so, after this book (except for #12 and 14) Marco's jokes have taken sort of a dive. They aren't funny anymore. Don't make this mistake again, Ms. Applegate.