Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The fifth novel in the Hornblower series....

It is the year 1808 and Hornblower, with the 36 gun ship HMS Lydia, is sent somewhere west of Nicaragua to join forces with an insane Spanish landowner to fight the Spanish government. Little did he know how complex things would become. First he had to deal with the Spanish ship-of-the-line, the Natividad, a 50 gun warship or face being court-martialed. THEN add the Lady Barbara Wellesley, who is very distracting for even a married man, and add a tiny twist that, half-way through the book, Spain switches SIDES! What will happen now?