TASK DEFINITION: Given a review text from amazon and its polarity (either positive or negative). Generate answer "True" if given sentence and its polarity match, otherwise generate answer "False". A review is considered positive if the reviewer is satisfied with the product. Otherwise, it is considered negative.
PROBLEM: Review: I agree, the CDs are a much needed help, since it would be impossible to pronnounce the Yoruba tones without the help of a native speaker. However, the design of the book is really poor and confusing. I have found several spealling mistakes in English and Yoruba. And the grammar explanations are very hard to understand.Unfortunately there are not many Teach Yourself Yoruba books that are worth it. This one at least provides basic vocabulary and pronounciation skills. 
 Polarity: Positive

SOLUTION: False

PROBLEM: Review: This is a text book I ordered for my classes for teacher certification. This book is very easy to read, and I am really enjoying it. It presents info and then at the end of a section, recaptures the essence of the reading for you. I would suggest it for any teaching class. I am learning so much from this book. I have been buying all my text books from Amazon because they are so much cheaper, and sometimes I can get free shipping. So far, there has not been a book that I could not find here at Amazon. 
 Polarity: Negative

SOLUTION: False

PROBLEM: Review: Very basic . More challenging and rewarding exercises not covered . Many routines designed to be done with a partner than alone 
 Polarity: Negative

SOLUTION:
True