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 heated these up in the microwave, and they do not microwave evenly. some will be burnt and hard as a rock when others will be just right. since you dont get very many in one bag, and since about 1/3 dont cook right, you barely get any pork rinds and throw the rest away. Maybe I am not cooking them right, but i followed the directions...
Example Output: Negative

Example Input: I have recently been on a low carb diet, as I find that I can no longer tolerate even natural sugars like agave, honey, and dates. These raise the blood sugar which spikes the insulin, a hormone whose message is "store fat!" Insulin also causes the kidneys to retain water and therefore I would bloat from a high carb diet. My dilemma is that I love sweets--and now it is not a problem, thanks to products like stevia, a natural plant that has safely been used in parts of the world as a sweetener for hundreds of years. It has no calories and no impact on the blood sugar (although for some people there might be a bit, as the brain is tricked into thinking it is getting sugar). Stevia used to be legal in the USA only as a cosmetic product because of politics: companies that made low calorie sweeteners such as aspartame did not want competition. Yet, aspartame gave me headaches and even sometimes symptoms of multiple sclerosis. So I would use stevia at times, but the aftertaste was bad--and to be honest, I wasn't too crazy about the "during taste" either. Then I tried NuNaturals. This product is awesome and like no other stevia I have tried. It is not only delicious but also has no aftertaste (unless you put in way too much--a common mistake by people new to this). It comes in tablets and in powdered form (in a bottle or handy packets with individual servings). It also comes in alcohol-free liquid form and even in vanilla flavor. Unlike aspartame (which becomes even more toxic when heated) stevia can be used in baking. NuNaturals has a stevia baking blend just for that. (Since I am a raw fooder, I can't tell you how it tastes, but I am sure it is good, judging by their other products.) Thanks to these great products, I can do a low carb raw diet but not be deprived of my sweets!
Example Output: Positive

Example Input: I don't want to say these are awful but I won't ever get them again. The praise in other reviews, especially for the hickory strips, convinced me to try them. I now suspect the praise was "planted" by vested interests. The weaknesses of the product are legion. First, it's so hard to get the package open I had to get out the scissors; thinking you could get it open while hiking is delusional. You'll have to stop along the trail and get out a tool. I recommend a hatchet. Finally opened, the first realization is that slugs are less slimy. This in no way resembles a jerky if that's what you were hoping for. It's more like a piece of fruit leather that got left in the bathtub over night. Or just a mashed slug. Then there's the taste. It basically tastes like sugar. Very unhealthy treat for diabetics certainly; you'll need an electron microscope to read the molecular fine print, but basically it provides a heavy load of cane sugar. At best this is like slimy candy, not jerky at all, not even close. For a vegetarian jerky product that is both tasty and relatively healthy and won't leave your fingers covered in pancake syrup, I recommend Stonewall's Jerqee.
Example Output:
Negative