In this task, you are given a review of a movie and a boolean question whether this review has positive sentiment or negative sentiment. Your task is to generate answer "yes" when the tweet has that particular sentiment, otherwise generate answer "no".
Q: Review: This movie kept me constantly entertained. In comparing this to Serial Mom, Mr. Waters has gone back to his grittier side. This is not nearly as polished.There is a dark side here. A message about how success and fame changes a person -- but more importantly how it changes the people around you.There is not a false moment in this film.The characters are somewhat cartoonish... but I want to believe that is what Mr. Waters is trying to achieve.It is fascinating to watch how Mr. Waters has evolved... This is truly his finest work. Question: is it a positive review?
A:
yes