Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Ex Input:
Haven't had an opportunity to use them yet, but after examining them they appear to be a quality product , I'm sure they will be just fine and work as expected.

Ex Output:
Positive

Ex Input:
When I heard their first album, leitmotif, I was blown away (something that only ocassionally happens). A fascinating album, combining various instrumentals with well placed vocals. so some time went by and eventually I bought the follow up, el ceilo (sp), and to say the least it was really damn disappointing. songs were too structured, ambiant sounds were predictable and not-interesting. and the lyrics SUCKED. i was really bummed. but then I saw a new album comming out. alright, perhaps they learned from mistakes, perhaps every song won't sound over-produced and catchy. instead, it only got worse. if you had never heard this band before, "catch without arms" will probably sound alright. but if you knew how good they were on leifmotif, don't buy this. i feel like i wasted my money (and i rarely feel that way about music). dredg has lost whatever it was they had. they are just mediocre. a real tragedy

Ex Output:
Negative

Ex Input:
T.H.White must have published at least three slightly different versions of this story.When I read the full Once And Future King book a few years ago, there was no Madame Mim episode, there was a buttery version of the fairy castle (Robin Hood) episode, there was an Archimedes/Wild Geese episode, and some other minor changes/additions.When I read a paperback Sword In The Stone twenty years ago, there was a much nicer non-buttery version of the FairyCastle/RobinHood episode, and I don't think the Giant Galapas episode was there, etc.Now I've just read the illustrated hardcover Sword In The Stone edition, and the FairyCastle/RobinHood episode is replaced by an Anthropophagi/RobinHood episode, Giant Galapas is there, and the Archimedes/WildGeese isn't (its been replaced by an Archimedes/Athena episode).Anyone else notice these differences and have an explanation for them?

Ex Output:
Positive