Review: to make an old-fashioned nature film that educates viewers with words and pictures while entertaining them 
Sentiment: positive

Review: the experience worthwhile 
Sentiment: positive

Review: the problems and characters it reveals are universal and involving 
Sentiment: positive

Review: it 's a stale , overused cocktail using the same olives since 1962 as garnish . 
Sentiment: negative


Review: a bump on the head