Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Tag states it has cancer causing ingredients

I was unwrapping these to give to my boys on Christmas morning, and was very upset to see a tag that states this product has materials in it that are known to cause cancer. This needs to be made clear on the product page. I never would have purchased these if I had known ahead of time. Now my kids have one less present to open tomorrow morning, and I have to go through the hassle of sending this back.