Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[Q]: The directions to put this together were unclear and failed to note that you need to use really oversized bags. After a few uses the sides have already broken. The clips are really hard to put on and off the the rack.
[A]: Negative

[Q]: What am I reviewing here... this gizmo or the supplier, Eforcity? I never received this product after my order! After waiting and waiting I contacted Eforcity several times -- no reply. After a nasty letter from me Eforcity'r reply feigned lacking information about my mailing address!What a cop-out.I told them I would not pay for it, so Eforcity said they'd give me a refund, which has not come to me yet. I bought another product to replace this from Amazon which arrived quickly from Amazon.
[A]: Negative

[Q]: I purchased this book hoping to find some history of the town that one of my ancestors Samuel Richardson, helped found. Although there was little mention of people from my direct line, this was an extremely interesting read of the history after the town was founded in 1630. The history and characters are real and the various chapter authors did an excellent job of researching facts and putting them into facinating stories. This book gave me a better understanding of what several generations went through in order to make Woburn what it is today. This would be a great read for anyone interested in the early history of the United States.
[A]:
Positive