Instructions: 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.
Input: The description said these where authentic Sennheiser, which I knew. However, when the package arrived in less than five days, it was actually a cheap knock-off. It had an absolutely different sound and fit to my original headphones. Also, they were all dirty (and scratched, and dirty, etc). Very disappointed with this purchase, as you would expect high quality headphones from Sennheiser.
Output:
Bad review