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.

[EX Q]: If you already have the DeWalt batteries his is a great addition. This fan is so convenient to use that I end up using it all the time. It moves an impressive amount of air while at the same time is quiet. A 6Ah battery runs for over 10 hours on high.
[EX A]: positive

[EX Q]: I was immediately disappointed with the quality of this ring. It bent as I was removing the tag. It’s pretty and it hasn’t turned my finger green YET, but overall disappointing.
[EX A]: negative

[EX Q]: just received and opened the pro source exercise puzzle mat 3/4 inch - I ordered 2 sets of these mat squares. I was surprised to find one set (6 squares) had a wooden branch pierced through it - through all 6 squares! What’s really strange is that the box it was shipped in was not pierced. I ordered a 2nd set and while none were pierced through, one square was dented at the same spot as others (in the other wrapped set)- maybe this happened in the warehouse??? I hope that the seller sees this comment and reaches out. As there is not an option to contact seller in the amazon order history.
[EX A]:
negative