In this task, You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

[EX Q]: These are postcard stamps that the seller takes forever (pun intended) to mail. It was amazing though ... Once I tried to cancel for taking too long they shipped that day. Soooo incredibly irritated with this purchase.
[EX A]: negative

[EX Q]: Not water tight...? moisture inside lenses after only a couple weeks of installed use. Was sent replacement, and it did the same after only a couple weeks. Then after about 4 months half of the lights stopped working.
[EX A]: negative

[EX Q]: I had bought a tux on eBay that didn't come with a shirt. This fit very nicely and was a great value for the money. No one could tell I got this cheaply on Amazon. I only need to wear a tux a few times a year, so perfect value.
[EX A]:
positive