Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Perhaps written by a ghost writer for Clancy?

Is Tom Clancy trying to milk Jack Ryan fans for a few more dollars? This was an extremely poor addition to the series, and nowhere near the usual standards expected of Clancy. Neither the plot nor the writing provides any suspense. The book lacks the thorough research Clancy usually delivers. The novel is long on dialogue but short on analysis or action. Much of Ryan's (fairly minor) role in the plot is highly implausible. There is no attention to detail or consistency (the Rabbit goes from Captain to Major to Colonel and back to Captain during the course of the novel). The sloppiness just served to annoy this reader.