Instruct: Classify Amazon reviews into positive or negative sentiment
Query: 'Must' reading for any interested in pirates

Everyone's heard of pirates Captain Kidd and Blackbeard - but history buffs may be amazed to learn these famous pirates only took about thirty ships between them, whereas Black Bart Roberts alone took more than four hundred ships in a brief period of time. Terry Breverton's Black Bart Roberts is 'must' reading for any interested in pirates and American nautical history: first-hand accounts, court documents, and maps accompany a fascinating bit of piratical history on the high seas.