Instruct: Classify a review into positive or negative sentiment.
Query: This is simply superb

I have been using if for a month. It is wonderful gadget to have. Primarily I bought it for teaching purpose. I write on a simple paper pad while sitting on my chair and my students (in the class) can see it projected on the screen through an LCD projector. It improves teaching and learning experience a lot. I don't have to use chalk and blackboard anymore. I also use it for my webinars; the attendants can see my drawings on their computer screens screens in real time.Thanks to D. Shillcock's who posted the refill information.You can purchase the following ink refills from staples, office depot, etc.:BRAND / MODELCross / 8518-1Zebra / BR-8A-4CLamy / M21Sterling / 01800TSpalding / RFR80AStaedtler / 930-ASBK3V