Task: Sentiment Analysis
Input (English): I started using NuStevia several years ago.  Back then I had to purchase it from a health food store.  Thanks to Amazon I can now order and have it within a few days.  I never run out!  As for the product, it's the best.  I've tried several Stevia products but they have an after taste.  Not with NuStevia.  Please try if you haven't. 
 Polarity: Positive
Output (English): True