Instructions: 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.
Input: Dynasty brand green tea is the best green tea I've ever tasted. It never tastes stale, unlike brands I've bought in grocery stores. This is because each tea bag is packed in a sealed envelope with a metallic lining. The metal apparently keeps out moisture.
Output:
Positive