Review: presents visceral and dangerously honest revelations about the men and machines behind the curtains of our planet . 
Sentiment: positive

Review: 's no disguising this as one of the worst films of the summer 
Sentiment: negative

Review: being subjected to farts , urine , feces , semen , or any of the other foul substances 
Sentiment: negative

Review: even in terms of the low-grade cheese standards on which it operates , it never quite makes the grade as tawdry trash . 
Sentiment: negative


Review: an interesting storyline