Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
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Question: I used this program for my science class. My students loved it! They learned some interesting facts, saw damage from earthquakes we talked about in class and never once did I hear that it was boring! Can't beat that!

Answer: Positive

Question: The subject is trivial and boring. The writing skill mediocre.I was stuck in Sri Lanka and downloaded it by mistake when learning how to use my new kindle. Decided to take a look.Sorry, perhaps just not my type of book. It is no literature.

Answer: Negative

Question: Delivery time was excellent. The comments others have made about the boot running narrow are correct. I ordered a wide but while the boot fits ok it does feel tight in the width. The first couple of times I wore it on short hikes it was comfortable, but on a 3 hour hike it rubbed off the skin on the side of my left heel. Also, the boots have a very stiff sole. However, walking in wet snow the boot remained perfectly dry. I'm new to hiking so perhaps this is normal, but the boot leaves something to be desired as far as foot comfort goes.

Answer:
Positive