Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A world of complete knowledge

My father bought me the Encyclopaedia Briannica 2006, ultimate reference suite. When I install it on my computer, I became extremely happy because it contains everything I needed. It help me to do a lot of projects and home works. It is good for students like me. Really it is a world of knowledge. It's new videos, images, content etc. are very usefull. So I say that everyone should buy this for you and your child. It will help you to know everything in the world. Before buying this I have the Encyclopaedia Britannica 2003, deluxe edition. When comparing these two, The level of 2006, ultimate reference suite is very high. It is little slow, but it is not a problem when compared to the content inside it.