Review: unembarrassing but unmemorable 
Sentiment: negative

Review: a bravura performance 
Sentiment: positive

Review: happily , some things are immune to the folly of changing taste and attitude . 
Sentiment: positive

Review: a fascinating case study of flower-power liberation -- and the price that was paid for it . 
Sentiment: positive


Review: is too heady for children , and too preachy for adults .