Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Input: Consider Input: Good, sturdy platform for squatting under a barbell. Very firm. Laces are long enough to wrap around ankles, and back of shoe forms a fair notch to retain the laces and keep them from sliding up and off the shoes - would have been better had there been a rear loop. Shoes are better without the insoles because they put a spongy foam wedge under the heels. I replaced them with thin flat insoles from a pair of water shoes. One could cut the foam wedge and use the included insoles. There is no raised heel other than that foam wedge. They run true to size or slightly tight.

Output: Positive

Input: Consider Input: not bad but be warned you need to buy extra play-doh at local store before handing it to the kid's

Output: Positive

Input: Consider Input: Purchased this radiator 5 months ago. It fit perfectly and performed well for 5 months. The side tank seam started weeping last week. This week it is leaking a lot. I expected this to last much longer. I will purchase another brand next time or go to a junk yard and get one from there.
Output: Negative