Title: Good book. Review: If you want to learn what is openGL and how to create 3d graphics using this library, this book is perfect. But if you need more, such as collision detection, 3d engine design, game programming ..., you should choose another book. Does this product review convey a negative or positive sentiment?
Positive

Title: Plantronics Review: It works well- reception is clear, however - it is a little awkward to fit behind the ear and it feels like it is going to fall out a lot. I tried the various ear inserts and none of them feel very good. Does this product review convey a negative or positive sentiment?
Positive

Title: The Best SCI FI ever written Review: The Hyperion series kicks ass! Few writers can combine the socio-political, theological, scientific and philosophical as well as Dan Simmons. He uses age old archetypes in a vast and complex universe. He shows us the rise and fall of civilizations, the inner workings of societal relations, the human desire to find meaning and purpose, the psychology of martyrdom, villany and heroism. Does this product review convey a negative or positive sentiment?
Positive

Title: love it! Review: I bought this because my 94 year old mother loves musicals, & can sing along to most of the songs. Does this product review convey a negative or positive sentiment?
