Question: Is there a negative or positive tone to this product review? === Title: depth of contents Review: i found this book veryuseful as a teacher and currently using this book to teach the undergraduate students in bombay university. Answer:
Answer: Positive

Question: Is there a negative or positive tone to this product review? === Title: owner for over a year Review: these tanks are difficult to clean.you need a heater and there's no way to put one in without changing the appearance of the tank.there should have been a heater built into the base.it also scratches easy. Answer:
Answer: Negative

Question: Is there a negative or positive tone to this product review? === Title: Horrible peice of garbage. One start is too many Review: If you could give negative stars this would be the product. Fell apart while assembling and first time cat jumped on it, the tunnel fell off. DO NOT BUY! Answer:
Answer: