In this task, you are given books product reviews in English language. The goal is to classify the review as "POS" if the overall sentiment of the review is positive or as "NEG" if the overall sentiment of the review is negative.

Input: Consider Input: Get Out Your Plow and Harness Old Nellie . ...to get a little tilling done before someone steals and eats her. I chose this book for my second read on this subject because it has the highest ratings (on subject) on Amazon. Heinberg has done a thorough job of discussing every aspect of the coming problems to society due to a lack of petroleum - most of which I had never considered. Literature about this are from the point of view of either the politician, the economist, or the geologist. He takes the view of the geologist and the future does not look good. I hold a more positive view: that human ingenuity will prevail - but I could easily be wrong. In any case, this is a worthwhile read for anyone. Of particular interest is the chapter that deals with alternate energy sources. The next time you read about an alternate energy source in the news, you'll remember the real pro's and con's from an expert. Quick synopsis of 41 page alternative fuel chapter from "Party's Over:" Natural Gas: Cannot be shipped from overseas easily like oil - is more difficult to extract economically every year - is being depleted like oil. In view of the precarious status of North American gas supplies, any attempt to shift to NG as an intermediate fuel would waste time and capital in the enlargement of an infrastructure that will soon be obsolete. Coal: Shortage not so much a problem, however, its EROEI (Energy Return On Energy Invested) and pollution are a problem. As the richer seams are exhausted, it may cease to be a useful energy source within only 2-3 decades. Nuclear: Electricity from existing nuclear plants is inexpensive, but only if direct costs are considered. When adding in plant construction, safety, reactor decommissioning, and waste storage - nuclear power is very expensive indeed. There are currently 442 reactors operating worldwide. France in the only country in Europe still building them. Only Asia expects to expand significantly. Only a few of the highly touted fast breeder reactors have been built, and they have proven to be prohibitively expensive. The US currently processes enough uranium to fuel existing US reactors for the next 40 years. The mining process is wasteful, polluting, and dangerous. When all things are considered, the EROEI on nuclear energy is fairly low and there is significant intangible downside. Wind: Of all renewables (not depletable), wind power usage on a global scale is being developed the fastest. Technology has advanced - it no longer kills birds because it uses slower fan speeds and the fans are mounted on a vertical axis. It can operate in more variable wind speeds and the cost is declining rapidly. Soon your own equipment could be bought and used on your own property. Wind has the best EROEI and Germany leads the world in its usage. On a large scale, wind power would require vastly new infrastructure, but it is the most practical alternative so far. Problem: cannot easily be converted to fuel transportation and agricultural needs. Solar: Technology advancing rapidly, photovoltaic the best so far. Research is advancing into diverse methods of collection, including such easy methods of application as solar buckyball collectors incorporated into house paint. Tremendous potential, would need new infrastructure. Problem: cannot easily be converted to fuel transportation and agricultural needs. Hydrogen: For now, the process of hydrogen production always uses more energy than the resulting hydrogen will yield. For one thing, hydrogen is not an energy source, but an energy carrier. It's production depends on continued usage of the dwindling supply of natural gas. There is new technology, however, and reason to be optimistic. As with wind and solar, a whole new infrastructure, requiring time and investments of huge amounts of money and energy technology are necessary. Like wind and solar, hydrogen fuel cells should be central features of our plans to phase out petroleum. We should be dramatically increasing these investments. Hydroelectric: In many regions of the world - and especially in the US - it is already thoroughly exploited. Geothermal power, tides, and waves: limited application in limited regions of the world. Biomass: wood burning - pollution and limited resources in a world with 6 billion people - imagine the world being one big Easter Island. Ethanol: costs more energy to produce than it eventually delivers to society. Brazil is the poster child, but is burning down rain forests to grow sugar cane. Cold-Fusion: pseudoscience Conservation - Efficiency and Curtailment: Will be crucial in cushioning impacts from the depletion of oil. But it is not a panacea - even when you ignore cheaters (individuals and countries). Saudi saying: My grandfather rode a camel. My father rode in a car. I fly a jet airplane. My grandson will ride a camel.

Output: POS

Input: Consider Input: Rightwing hack spouts economic drivel . The only thing Milton Friedman has going for himself is that he says out loud what other reactionaries will only whisper. Ayn Rand would have loved Friedman's disdain for the poor--for anyone, in fact, lacking the "initiative" famously shown in a 1963 cartoon in which Barry Goldwater stands in front of a poor person in a Southwest ghetto and says, "Why don't you show some initiative? Why don't you go out and inherit a department store like I did." If you think the status quo was ordained by God, or that capitalism is the best that humanity can come up with, this book is for you. If not, start reading Trotsky, Lenin, and all the people with vision, compassion, and utter disgust for the sad mess that the fat cats have made of this planet.

Output: NEG

Input: Consider Input: A great program!! . I know DR. Young and Shelley personally. They went to school with my dad and are great people. I have been to their home and retreat center Rancho Del Sol, and it is a great place. I also have been on the Ph Miracle diet for about 6 months now, and it works! I have lost over 20 pounds since then and I have cleared up some nasty protein pools in my blood that Rob found six months ago when I started the program. At first I was a bit skeptical and hesitant to go on the program, but after time I felt that it was working and it was great. The food - which is cooked by a good friend of my family's and is also on the Ph program - is excellent, and the program is great. And, those jerks that attack Rob and Shelley personally are nothing but low-life jerks. Rob and Shelley are wonderful people and great friends of mine. On their retreat to Rancho Del Sol, they went so far out of their way to help me and all of the others on the retreat. And, when you watch Rob do a live blood test, it is fascinating. He presents his findings in conferences that are followed by a great Alkaline lunch. And the findings are very interesting. He bases most of his work on the work of A. Bechamp, an 18th century scientist that was an understudy of Louis Pasture. The facts are there, and quiet fascinating. He (Rob) is brilliant, but a bit excentric. But that is understandable considering his passion for his work. Over all, this program works. I love the alternative path way to health, but do admit that Western methods are needed at times. I just feel that you don't need to "Dope up" on Px drugs at the first sigh of trouble. So I give this 5 stars not just for the program, but for Rob and Shelley as my good friends. But... Do this in moderation to other healthy lifestyles. Don't just go 100 percent Alkaline all of the sudden. Slowly work your way to that wanted PH and be moderate with other health practices. So 5 stars for me. The book presents it all. A great read on the Ph program for weight loss! But do not assume something until you have read the book. And forget what you might think about the program until you read the book and have a sound understanding of Rob's theory. Thank you Rob and Shelley!!
Output: POS