Instruct: Classify Amazon reviews into positive or negative sentiment
Query: O'Connor provides mediocre book.

O'Connor oversimplifies the grammar she is attempting to teach. Just how many times does she have to write about they're, their and there? It seems that she repeats herself throughout many of her chapters. I expected this book to provide a challenge for me, instead it was just confirming things I already knew. This is truly for the grammarphobe, one who has little grasp of writing correctly. She does point out some good things though. One example is that someone can get away with more errors in speaking than in writing. She also addresses the fact that some of us learned incorrect English as spoken English.