Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[Q]: Steve Milloy, author of this book, is a Washington, DC, lobbyist who has represented just about every polluting industry imaginable, especially the tobacco industry. If you doubt this, read the book Trust Us, We're Experts! by Rampton and Stauber, who have pages on Milloy, CATO, American Council on Science and Health, and their PR campaigns to smear health and environmental concerns as 'junk science' waged by evil public interest groups and activists like Ralph Nader. Pure industry propaganda.
[A]: Negative


[Q]: My husband and I were not able to attend a birthing class, so the doctor suggested we rent/buy a video. We decided on this one, and although the 'teacher' was a bit corny it was helpful. I especially liked that you could fast forward and skip parts! All in all it was a worthwhile purchase and proved helpful to us both.
[A]: Positive


[Q]: This is a great printer for any use up to 8X10 photo production. The "But" in the review is the cost of ink and the fact that it uses a single cartridge. I run out of one color ink even with it set to a lighter setting in the printing menu and I am out of luck. The rest is wasted. The two sided printing is great ...particuclary with all these programs now having the 'manual' on the CD to print....
[A]:
Negative