Instruct: Classify the given review into positive or negative sentiment.
Query: Chicago Cutlery Classic Chef prep knife set .

These knives were a real disappointment ...I was really hoping they would be of good quality. I was very disatisfied with their performance...the large Knife would not even cut through a half a head of cabbage and what part it did cut went to a slant because the knife was not sharp enough to cut straight through ...the small paring knife does ok for things that arent too thick or hard but really If I knew then , what I know now , I would not have ordered them... so hopefully this review will help someone else not to make this purchase and waste their money .