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.

Example Input: I have ordered numerous teas, potions, lotions and other remedies...BUT have never had a lack of product in an order that was sealed.  The tea bag wrapping in question was sealed without a tea bag inside.  I would have said something sooner, however...I only tried these when I had a sinus infection and the last 3 times I tried to use one...the sealed pouch was EMPTY.  BEWARE!
Example Output: Negative

Example Input: I bought this "flavor" and the raspberry pom and while they are consistent, it's useless.  If you plan on making a pitcher of tea, forget it, it takes 4 packs for 64 oz and is still very, very weak in flavor, and it must be consumed in 12 hours (so they say) so you're much better off brewing your own.  However, if you're idea is to "stash" this in your purse (for the ladies) or pocket (for men, which would be weird) it's still misses the mark. One packet does very little for flavor with 16 oz of water so you'd have to use two, and WHO drinks just 16 oz of water when out to eat or something of that nature? Also, with only 8 to 12 packets in a box (depends on flavor, who knows why?), that gives you 4 to 6, 16 oz drinks for $3. Not sure it's worth it at all, I'd rather drink lemon water when out than this.
Example Output: Negative

Example Input: these are the best chips ever. I will buy them again, wish more stores had them.The plain chips are my fav.
Example Output:
Positive