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.

Q: These definitely do not feel safe. I was baking something at 400F and took the tray out and looked at the mitt and it was completely black where I picked it up..... NOT WORTH BUYING.

A: negative
****
Q: I have been searching for a xbox one controller charger for a while. This charging station is perfect for my boys! Super excited that I do not have to constantly go buy batteries.

A: positive
****
Q: The plastic optics on these binoculars are not uniform. This makes them effectively useless and hard to focus. When the middle is focused, the outside edges are blurry, and when the outside edges are in focus the middle is blurry. I bought 4 pair of these binoculars for my kids, and every single one of them are unable to be focused properly. I am familiar with optics and binoculars, and am aware that plastic lenses don't have the same quality as glass, and that these are cheap ones and my expectations should not be high. But the lenses aren't even shaped the same from binocular to binocular. These are spectacularly bad.

A:
negative
****