Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: Purchased these socks looking for the right balance of light construction and cushioning. I found only the light construction part. While they seem durable enough, the socks are way too light to provide an adequate barrier between my shoes and my feet. It's easy to earn a blister on anything more than a short run.These may be just right for someone who does not punish their feet with marathons and triathlons, but just not substantial enough for me.
Output:
Negative