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

Example Input: I have not read any of Charlie Smith's other work, so I can't compare this to previous efforts. His writing is poetic, and truly impressive in short bursts. But over the long haul, the poetry interferes with the prose. Words and phrases seem to be chosen more for their sounds and rhythms than for their contributions to plot, and dialogue can be stilted. Imagery is vivid but occasionally self-indulgent. The storyline is interesting at first but eventually grows gaudy and distasteful. The power of Smith's language is his greatest strength, but it is a strength better suited to poetry than novels.
Example Output: Negative

Example Input: This portable heater is good for use in your office, den or sleeping area..It is quiet and efficient,and is good for spot heating...please keep away from drapes or rugs,and small children,who might mistake this heater for a toy...Otherwise this is a good deal...Mine came with a remote to adjust setttings more easily...4 star rated...
Example Output: Positive

Example Input: Over the winter, i seem to gain alot of weight. As a high school quarterback, that is not acceptable. Last summer, i think i went from 160 to 150. That's my gross weight loss. I'm not even talking about how much fat i lost. I gained a good amount of muscle over the summer, so i probably lost over 15 lbs of fat. I got my six pack back, and life was great. After the season, i just quit, and now my six pack is back in the fridge. I'll probably order some up next week and start again. These are great, and the results are amazing.
Example Output:
Positive