Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Example Input: Needed place for kids to sleep while visiting grandma and now they argue over who gets to sleep on the air mattress. Both think it's more comfy than their bed at home.Would have given 5 stars, but the bag it comes with to put it in is worthless, no chance of ever getting it in there again.
Example Output: Positive

Example Input: If you need a grammar reference, this may well serve until you find a better one. It might be of greater utility if the tone wasn't vaguely condescending and pedantic, and it eschews the panoply of actual examples in favor of definitions. To wit: the 2nd person singular present perfect conjugation of "to love" results in "If you have been loved..." gives me one (singular) example but not the rationale of when to use this. The density of the text preceding the example conjugations will require your own self-study to master (if you must) the ability to spin off a subjunctive 3rd person plural present tense conjugation.The best recommendation I can offer for this is as a companion for language learners who need a quick reference for English analogs of other-language conjugations, such as when you try to conjugate "falar" and need to know which one to use.--#
Example Output: Negative

Example Input: Gorecki, as usual, is striving for profound angst, but for the most part this Quartet just comes across as boring. The second and fifth movements are terrible. The first movement develops some tense themes that Gorecki could have explored further, but he drops them midway to revert back to his usual droning. The third and fourth movements are the only ones with character, with the latter developing a decent amount of bittersweet sadness.
Example Output:
Negative