Instruct: Classify a review into positive or negative sentiment.
Query: One of the great films of the 70s

Chinatown is a superb film noir and one of the landmark films of the 1970s. The script by Robert Towne (winner of the Oscar for best original screenplay for 1974) is justly famous as perhaps the best screenplay ever written in Hollywood. This is not only a superior detective story but one of the most incisive studies of the morality of the American ruling class ever committed to film. Truly, Roman Polanski's best film with great performances by Jack Nicholson, Faye Dunaway (both Oscar nominated) and John Huston in a memorable turn as the face of evil.If you have lived in Los Angeles, you will not want to miss this film as it details the machinations that brought water, and the Valley, to the city of angels. Hell -- if you have lived anywhere in the world you will not want to miss this film. A masterpiece.