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.

Example Input: These are perfect.
Example Output: Good Review

Example Input: I had been planning a trip to the Galapagos Islands, and this guide was required reading by the tour group guide. The guide is thorough, providing information of interest and useful for all travelers traveling among islands, but the format of this book severely detracts from any pleasure of seeing them. There's an interactive CD-ROM provided which allows you to see photos that were previously in the book, but not the whole trip. Additionally, there are many grammatical or spelling errors.
Example Output: Bad review

Example Input: It's okay but not sure if its gonna last long. I am also afraid someone will steal this from me. And there are some weird wrinkles on the back of it.
Example Output:
Good Review