instruction:
In this task, you are given a review of a movie and a boolean question whether this review has positive sentiment or negative sentiment. Your task is to generate answer "yes" when the tweet has that particular sentiment, otherwise generate answer "no".
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Review: This is only a response to the yahoo who says this movie is more realistic than the classic, genre defining MASTERPIECE, Jaws. Yes, brainiac, great whites(and other species of shark, bull, black-tip, oceanic white-tip, tiger)have been known to populate areas where easy prey is found. Humans don't often make it onto that menu, granted, but the shark in the film was repeatedly pointed out to be exhibiting abnormal behavior. It's not like it's never happened. The odds of a killer whale destroying nearly a whole town, singling out a human nemesis, sinking several dozen thick hulled North Atlantic fishing boats and knowing when certain people, all friends of the aforementioned "nemesis", are close enough to the water for it to reach, are so slim as to be laughable. Much like this turd of a Jaws knock-off. Laughable. Great white sharks are also known to frequently chew on boats, protective underwater cages and people on rafts and surfboards, as they look like seals from below. A shark the size of Bruce(if you don't know, look it up)would be more than capable of sinking a boat like The Orca(hey! that's the name of the blatant rip-off we're discussing!), as it would weigh upwards of 6,000 lbs. I could go on, but I don't need to. Jaws is amazing(better acting, better effects, better music, better writing), Orca is crap(BLATANT rip-off of Jaws, lousy writing, abominable effects, most ridiculous plot this side of an Olson Twins flick). It doesn't take a masters from Columbia University to see that. Watch better movies. Question: is it a positive review?
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no

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Review: I really didn't like this movie because it didn't really bring across the messages and ideas L'Engle brought out in her novel. We had read the novel in our English class and i absolutely loved it, i'm afraid i can't say the same for the film. There were some serious differences between the novel and the adapted version and it just didn't do any credit to the imaginative genius that is Madeleine L'Engle! This is the reason i gave it such a poor rating. Don't see this movie if you are a big fan of L'Engle's texts because you will be sorely disappointed. However, if you are watching the movie for entertainment purposes (or educational as was my case) then it is an alright movie! Question: is it a negative review?
answer:
yes

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Review: This is one of the worst films I have *ever* seen! It is bad, even at TV Movie level standards. The plot is diabolically flawed, and the known names in this film are wasted on confused, uncertain characters. I don't know how the director managed to keep this excuse of a film together - it is that bad. Billed as a 'Psychological Horror Thriller' - it is certainly Horrific. There is nothing Thrilling about it. And it could do you Psychological damage! The initial opening scenes held such promise - a possible embarkation on whether the soul is just an aspect of the brain, but the utter shambles that followed the car-crash scene is beyond belief. No matter how hard you try, you couldn't care less about the characters. There are so many sprinkled ideas that the film is at best a collage of disconnected phrases from Chinese philosophers, and at worst the film would actually make you go Brain Dead!I have purchased over 300 films on DVD, and this is the FIRST one I'm going to get my money back on. STEER CLEAR. Question: is it a positive review?
answer:
no