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

Q: I've owned this CD for a few years, yet thought something was slightly off, so I compared "Keep A Knockin" to another copy I have.Results:Original is 168 beats per minutes, while this version is 172 beats per minute.Original's time is 2 min. 23 seconds; this version is 2:16 min.

A: Negative
****
Q: Well, this was a perfect ending to a long busy day. I ordered the movie under the Tucson Sun to sit back and relax. It was very very enjoyable. I'm saying all this in a long-winded way because this review requires I write 20 words. This is actually kind of a pain because I am turned off about writing anything about these. But it was a fine purchase.

A: Positive
****
Q: This was one of my favorite books assigned in school this year. I like the exciting adventures of this cannon trek from Fort Ticonderoga to Cambridge, MA. I liked how they crossed the ice with all of those big guns. When the last gun crossed, the ice cracked, but they were able to get the big gun out.

A:
Positive
****