Instruct: Classify a given Amazon review as either positive or negative.
Query: It was very good, although the ending left me unsatisfide.

I really liked the Golden Compass and the Subtle Knife. I'm really bummed that the next book gets out so late. I liked almost all of The Subtle Knife as much as the Golden Compass, but the ending, I think, wasn't very good. When I was finished reading The Subtle Knife I was a little depressed. The ending was not something I expected. Philip Pullman has a unique style of writing, where not everything always turns out okay. When I was done with The Subtle Knife I was discouraged to read the next book, but I'm sure Mr. Pullman will end the trilogy with a bang.