Review: engrossing and infectiously enthusiastic documentary 
Sentiment: positive

Review: its unadorned view 
Sentiment: negative

Review: catching for griffiths ' warm and winning central performance 
Sentiment: positive

Review: is the far superior film . 
Sentiment: positive


Review: you can not guess why the cast and crew did n't sign a pact to burn the negative and the script and pretend the whole thing never existed .