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

Ex Input:
I've been a longtime fan of Mercedes and own most of her Valdemar series. So, of course, I picked this book up at my local store. After wrestling through 50 pages, I gave up! I plan to sell it back to my local store ASAP- this is nothing better than a paperweight in my bookshelves. The worst part is, my boyfriend picked it up and tried reading it. Now he thinks that this is a good example of her work!

Ex Output:
Negative


Ex Input:
This was a very good, fun light read. Very much enjoyed it. Am looking forward to reading more of her books!

Ex Output:
Positive


Ex Input:
I just bought my second one. We have 3 Macs at our house and the cords do not hold up. I dreaded replacing them but I like my computer. I tried this the last time my cord went and it worked great, so when the most recent power cord fell apart I did not hesitate. It does the same job at a third of the price!

Ex Output:

Positive