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

Ex 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!

Ex Output:
Negative


Ex Input:
not bad but be warned you need to buy extra play-doh at local store before handing it to the kid's

Ex Output:
Positive


Ex Input:
This junk really stinks (literally, it smells horrible)!! I've used better products and those other attractants did trigger responses in females. I've been INSULTED by the females at my job after using alter ego and been told things like "what in the world is that new cologne you're wearing, it doesn't smell good". I told my wife I was wearing a new type of "after shave" and she hates it so much I had to promise NOT to wear it to bed. Don't believe the hype of Alter Ego, there are far far far better Pheromones. It's apparent they tried to give it a MASCULINE tone, but they went too far.

Ex Output:

Negative