Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A roller coaster where your best friend dies.

This was a great ride...until the end. Ups and downs. Loops. Thrills and chills. Great acting, writing, and directing. But an ending that goes against the grain suddenly and violently with minutes to go does that in. Just like going on a great roller coaster ride, but your friend sitting beside you falls out at the end and is killed. The ride may have been great, but the horrible ending ruins what was one a great thing. That's all you can remember.Just like "SAW", if it doesn't make sense in and of itself, then of course your surprised.Oh, well. We still have the outstanding written work.