Given the task definition and input, reply with output. Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

The book is interesting and well written. Very detailed. I expected more of a discussion on the issues between Islam and Christianity. There are no discussions about any real differences in religious doctrine. This was disappointing. It would be very helpful if this were brought to your attention. Why not just say Muslims believe there has been many thousands of years of theological differences. If it had been, all would have known they were misunderstanding me. They wouldn't even need it. Just provide the information needed without needing my interpretation.
Good Review