Instruct: Classify Amazon reviews into positive or negative sentiment
Query: amateurish and adolescent

It seemed an intriguing premise--a guy so hell-bent on avenging his son's apparent murder that he's ready to assassinate the president. But Green's clumsy prose, shallow character portrayals, and use of gratuitous details make for a deeply unsatisfying book. It is difficult to feel an iota of sympathy for any of the characters (except maybe one poor sensitive oaf who, along with so many, ends up murdered). It's even more difficult to find an ounce of plausibility in the story itself. Oh well.