Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Shark Was Great for 3-4 Months

I loved the shark when I first got it. The motorized brush went first, after about 2 months, and then at month 3 or 4 the suction went soft. It would work at full power for about 1 minute, and then slowly peter out. I probably should have contacted the manufacturer, but I didn't. I got a lemon.