Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Horrid!

This book is terrible! It provides too few examples and does not explain the subject matter in detail. The problems are difficult to solve simply by reading the book, which contains inadequate information and insight. Beginners will struggle without outside help such as a professor, teaching assistant, etc.This is possibly one of the worst math books I have read and there is plenty of literature that can explain the same topics in a more clear, detailed manner with sufficient examples. Simply go to your local library.