Instruct: Classify an Amazon review into positive or negative sentiment.
Query: The dullest of the Dirk Pitt novels.

Having read most of the Dirk Pitt Novels to date, I have to say that Vixen 03 was the least enthralling.Maybe because it is the most plausible or perhaps most mundane of Cussler's Pitt scenarios, It reads almost like a typical young adult novel of low caliber action.