Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Let me give you an example: I've read this book with much expectation, it was very boring all through out the book
The answer to this example can be: Negative
Here is why: Review writer does not like the book because it was boring, therefore it is a negative review.

OK. solve this:
This product is NOT intended for a beginner...i had many toys and this one by far caught me by suprise on how big it is. The shaft is too big and makes it uncomfortable unless used with the right lubrication. Being a smaller/petite woman, it was a little uncomfortable for me b/c of the size...but other than that, it was very pleasurable.
Answer:
Negative