Review: the problem with `` xxx '' is that its own action is n't very effective . 
Sentiment: negative

Review: perfect use in the breathtakingly beautiful outer-space documentary space station 3d 
Sentiment: positive

Review: a solid , well-formed satire . 
Sentiment: positive

Review: 's so simple and precise that anything discordant would topple the balance 
Sentiment: positive


Review: richard pryor mined his personal horrors and came up with a treasure chest of material , but lawrence gives us mostly fool 's gold .