Instruct: Classify Amazon reviews into positive or negative sentiment
Query: PIECE OF CRAP!

I BOUGHT THIS PILE OF CRAP A YEAR AGO AND JUST OPENED IT. THE PILE OF JUNK DOESN'T WORK AT ALL. I SET IT UP AND ALL IT SAYS IS "VENTILATE" - IT WON'T DO ANYTHING. AMAZON HAS NO SUPPORT FOR THIS MACHINE, NO PHONE NUMBER TO CALL. I WOULDN'T BUY ANYTHING ELECTRONIC FROM AMAZON AGAIN.