Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Really good action thriller

This is one of my favorite political action thrillers. In addition to the good cast (Keanu Reeves, Morgan Freeman, Rachel Weisz, Brian Cox, etc.), the storyline is one which applies just as much today as it did 20 years ago, illustrating that greed and political expediency invariably seem to get the upper hand over real solutions. The film depicts a story wherein a clean, inexpensive alternative energy form is discovered -- but getting it out to the world for practical applications is the problem. Along the way there is lots of action, and good plot twists and turns. If you like this genre, you will enjoy this film.