Review: discursive but oddly riveting documentary . 
Sentiment: positive

Review: an engaging storyline , which also is n't embarrassed to make you reach for the tissues 
Sentiment: positive

Review: ... expands the horizons of boredom to the point of collapse , turning into a black hole of dullness , from which no interesting concept can escape . 
Sentiment: negative

Review: fascinating , compelling story 
Sentiment: positive


Review: a good one