Instruct: Classify the given review into positive or negative sentiment.
Query: So hard to believe

I have just completed reading part I of this book and I am finding it all very hard to believe. I do not believe that a 7 year old can have as much psychological insight into a situation as Mary Karr claims she did when she was 7, not to mention an adult sense of humor. All in all, the gist of her life-story may very well be true, but to me, it seems like Mary Karr has made up all the little details she write about in her book. It is also very very prosaic, and it pales in comparision to Frank McCourt's beautiful poetic memoir.