Instruct: Classify a given Amazon review as either positive or negative.
Query: System Analysis and Design

I wanted to return this book because it at the beginning of class the instructor indicated that the book was not required anymore for his class. I contacted the seller and they completely ignored me. I still need to return the book cause I am not using it.http://www.amazon.com/gp/product/013608916X/ref=cm_cr_rev_prod_img