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

Ex Input:
What else can I say? All that love CB should own this DVD. I love Charlie Brown and this is a true Christmas classic.

Ex Output:
Positive

Ex Input:
this product is good for child I guess..cause it is a little thin...but it is better than the one I saw on sports authority which is thiner

Ex Output:
Negative

Ex Input:
A friend suggested this herb to me to help with my awful PMS. After taking Vitex for only three days during PMS, I began to feel horrible: very irritable, nauseous and foggy. After doing some research, I found that a percentage of women react very negatively to this herb -- some people remarked that they initially felt better, but then progressively felt worse and thought they were going crazy; some said they immediately felt terrible. I guess it's a gamble that many of us are willing to take to feel better though. Wish it had worked!

Ex Output:
Negative