Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: pinerock

this haiku handbook is probably THE book to buy/read if you are interested in writing haiku and appreciating the poetry. the authors are quoted in books and magazines across the country. the book is a history of japenese haiku but has the changes in haiku for the 21st century. a must read for anyone interested in writing haiku. it is a classic!