Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Part 4 to 6 of A series of unfortunate events

I read part 1 to 3 of a series of unfortunate events a couple of years ago and thought all the books were about the same. I didn't expect the story to be developing. From part 4 to 6 new personalities arive and the story develops further making you aware of and curious about the overall plot.