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

Ex Input:
What am I reviewing here... this gizmo or the supplier, Eforcity? I never received this product after my order! After waiting and waiting I contacted Eforcity several times -- no reply. After a nasty letter from me Eforcity'r reply feigned lacking information about my mailing address!What a cop-out.I told them I would not pay for it, so Eforcity said they'd give me a refund, which has not come to me yet. I bought another product to replace this from Amazon which arrived quickly from Amazon.

Ex Output:
Negative

Ex Input:
While Jawbone make a great blue tooth ear bud, it doesn't interface with ears well. The Jabra solution doesn't work. It doesn't hold the ear bud well allowing it to fall off at the most inconvieniant times. It also hurts your ear and is difficult to insert. It's not the answer, friends.

Ex Output:
Negative

Ex Input:
I'm not sure what zombie movies the other reviewers have watched but I find it hard to believe they actually liked this one. I feel like I was tricked into paying for this based on the reviews. The acting sucks. The set design sucks. The effects suck. What I'm trying to say is that this movie sucks.

Ex Output:
Negative