Teacher:Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Teacher: Now, understand the problem? Solve this instance: When I ordered this item, I was not aware that it could not be returned if defective. The item arrived very timely, but it would not operate. I later found out that the product is nonreturnable. I was very dissatisfied with this purchase.
Student:
Negative