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

This is Bernie Taupin's second solo album and it is excellent.From the rockers Born on the fourth of July to his smooth ballads Venezuela and Love(the barren desert). This is a great album for anyone who has followed Elton and Bernie's career.
Positive

I bought this first alert CO alarm for my home in Wisconsin.When I started to read the instructions I found that this product is not UL list! How can a safety item like this not be UL listed.I did some research and found out first alert changed testing labs to save a few bucks and do not use the most well known UL. What's up with that...So I returned this CO and purchased the Kidde KN-COB-DP-H Plug-In Carbon Monoxide Alarm. The Kidde unit cost less too, so I saved a few dollars! Always pays to READ THE FINE PRINT.
Negative

The book is well written and very interesting. I don't mind reading it unlike other textbooks. Was a little nervous about it not getting it in the mail before my class started, but it did get shipped and delivered right on time.

Positive