Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.

Ex Input:
i bought 2 of them to install them in front of the case and my case has now good cooling system :)

Ex Output:
Positive Review

Ex Input:
Defective, returned for refund, what else can I say! Believe the negative reviews, I guess you get what you pay for

Ex Output:
Negative Review

Ex Input:
I cannot believe you sent this in a plain envelope without any hard backing. I received the item all bent, quashed and marked. I want a full refund immediately. I have photo's to prove it. Please send your email address.

Ex Output:
Negative Review