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.

Q: This "biography' should only be offered via e-book (or another digital source).

A: Bad review
****
Q: This filter is perfect for me.

A: Good Review
****
Q: Got this for a friend & we love it. Not much to say about a phone cover, good job amazon. Keep up the excellent service

A:
Good Review
****