Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It works well for my needs

I use this to transfer my math and science notes into electronic format that I can save as PDF file, then download onto my tablet so I do not have to carry around three ring binders full of notes. It works great for that. There are many other features that I do not use that other users may or may not find helpful, but if you are looking for a program to organize your class notes, this will get the job done.