input with options: Title: Perfect Review: Excelent product. The design is perfect. The best thing is the operational system included at the pen drive. Is this product review negative?
output: No

input with options: Title: I am very happy with the purchase Review: After the first attic fan being run for 15 years, it quit. I bought this and installed without much effort, everything back to normal. I hope it will be still available after another 10-15 years. Is this product review negative?
output: No

input with options: Title: Pretty Decent Sci-Fi Review: In some ways it has elements of Beowulf and Highlander. The cinematography, acting, and special effects are all spot on. A good flick when you feel like something a bit different. Is this product review negative?
output: No

input with options: Title: Save your money! Review: I thought that I just had to have this bottle warmer. Boy was I wrong. I found this warmer to be more of a hasssle than anything. I used Avent bottle (which I love - no gas!!) so maybe the bottles are the problem - who knows. The bottles were either too hot or too cold. It is just as easy to install an instant hot water thingy on your faucet and make a warm bottle in seconds. Is this product review negative?
output: