Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: not good

It looks very nice when i got this machine, and i almost want to share my thankfulness here, however, after a few months of using it, it is not as good as i think, actually, it is bad. the paper jam always. many times you can't print continuously, if you print 2 pages together, the 1st page will come out twice, you will never see the 2nd page, and you have to manually cancel it and print the 2nd page alone.the fax function is dull, it work around 50% of the time.the copy function is good, but you have to make copy one by one manually.the scan function is very good, i couldn't deny it.besides, somethings a black margin will appear in your printed pager.....i can't fix it