Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: I bought this batcave for the grandson for Christmas because the older model was no longer available. I was leery about the height of the toy and the bad reviews, and with good reason. Every time I turn around, there's a piece of it that has to be put back on. And I didn't realize until I read the other reviews that there is an elevator. Ours has never worked. My grandson likes the toy, but is getting bored with it, since it's always falling apart and quite a few of the gadgets don't really work. Don't buy this toy!!
Output:
Negative