Instruct: Classify an Amazon review into positive or negative sentiment.
Query: A lot of loose ends!

The film starts off good. Researchers are knocked off one by one by an assassin. Who is this man? Who does he work for? The film then takes bad turn by not explaining more in detail what's going on. The premise is there. There are moments of suspense. But, the execution just doesn't work. Blame the story and screenplay for that! By the end of this film, I wondered "why"? We don't get that answer and this film leaves a lot of loose ends. Marginal thumbs down.