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

Example Input: Just "assembled" the bat cave for my 5 year old. Pathetic construction and workmanship -- half of the gimmics don't work. Another pile of injection-molded plastic parts and stickers that I get to assemble -- what is this thing -- $4 of raw materials + $2 of shipping + $10 of marketing? Garbage. Shame on you Mattel, the only thing worse is the batman figures with the batarangs that take 30 minutes and a blowtorch to get out of the packaging. This batcave will collapse and die within hours of play, I'm sure of it. GARBAGE!
Example Output: Negative

Example Input: OUR TEACHER MRS GREEN MADE US READ IT AND WE HAD TO DO A BOOK REPORT ABOUT IT!IT SUCKS!!!!!!!!
Example Output: Negative

Example Input: Not one of the ear gels worked. Feel like I got ripped off. The ear gels are headed to the trash can where they belong.
Example Output:
Negative