Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The shredder failed after about a half hour of use

The paper shredder's cutting cylinders stopped turning after about a total of a half hour of use; the motor continued to run. I sent it back to Amazon.The shredder's box had a mean looking bull dog, marketing I took to mean that the shredder was tough. This marketing conflicts with the manual, which says that the shredder is recommended for 25 to 50 pages per day and that it should be used no more than 8 to 10 minutes at a time.