Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An interesting movie, showing a different side of Williams.

Robin Williams is a great actor, but it's not often you see him doing something other than comedy.Williams plays Sy Parrish, the local photo lab guy. To his customers he's happy and jovial, but underneath he is serious need of help.The movie takes you through Sy's mental unraveling and is good pyschological thriller.The ending was a bit strange, and made you sit back and wonder what all happened.But overall it was an enjoyable movie.