Task: Sentiment Analysis
Input (English): I purchased a black case for my new white iPhone 5c, and was very disappointed to discover that once it is in it, there are little openings that allow any dust or particles trapped inside the case, so you have this constant need to wipe down your phone several times. The top part of the opening also becomes stretched out somewhat after time and, therefore, slips off, leaving gaps around both ends which don't quite snap closed.
Output (English): Bad review