Question: Title: Surprisingly Good, Surprisingly Useful Review: When I first saw this book I thought that someone must be kidding. There's no question that XML is clearly the language to use when you want to transfer data using the standard web communications protocols. But a book that's more than a thousand pages, get serious.They I opened it, low and behold, links, style sheets, specialized forms of XML for specialized purposes that have been agreed upon by multiple competing companies. It turns out that there's a lot more to XML than I thought.Then in conjunction with XML other languages have been developed, some have proved not so useful and have faded away, others have evolved and changed to be more useful.All in all, this is a very useful book, well written and has given me some ideas about how to solve some problems. That's all you can ask out of a book. Does this product review convey a negative or positive sentiment?
Answer: Positive

Question: Title: Well Presented Thesis on the Bethlehem Star Review: This is a well-researched and intereting presentation on the astrological explanation of the Bethlehem Star. Great for pre-Christmas viewing. Does this product review convey a negative or positive sentiment?
Answer: Positive

Question: Title: Failed to turn on Review: The instructions were difficult to follow. I called the technical support of the manufacturer for assistance. They sent me a simplified version of the instructions. After calling the manufacturer again several times and programmed the switch in all modes, the switch still failed to turn on. So, I am returning the switch. Does this product review convey a negative or positive sentiment?
Answer: