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

Example Input: The case I had didn't fit properly - the window obstructed the rightmost side of the display. You could shift it over, but it would always shift back. I don't know if they are all that way (maybe I got a bad one?), but I didn't want to buy another one to find out.
Example Output: Negative

Example Input: I purchased for my guest room for overnight stays for family members.this holds up very well especially for grandchildren
Example Output: Positive

Example Input: Nappy... this book gets down to the nitty gritty. Venus and Kandi are so real. I could see myself in both characters. I think many black women are like Venus, independent, take charge, and wish or have tried (as I have) cutting their hair off. Kandi, on the other hand, is what we have to at least appear to be to black men so that we are considered attractive- long hair, sexy, somewhat dependent, emotionally needy, and not intimidating. If you want to read a book that is not only pleasurable to read, but infused with a realistic look at the lives of young black women then I think you will enjoy this one.
Example Output:
Positive