Review: is n't very funny 
Sentiment: negative

Review: a class by itself 
Sentiment: positive

Review: when ` science fiction ' takes advantage of the fact that its intended audience has n't yet had much science , it does a disservice to the audience and to the genre . 
Sentiment: negative

Review: an unsuccessful attempt 
Sentiment: negative


Review: spinoff of last summer 's bloated effects fest the mummy returns