that the film opens with maggots crawling on a dead dog is not an out of place metaphor . 
(ROOT (S (SBAR (IN that) (S (NP (DT the) (NN film)) (VP (VBZ opens) (PP (IN with) (NP (NP (NNS maggots)) (VP (VBG crawling) (PP (IN on) (NP (DT a) (JJ dead) (NN dog))))))))) (VP (VBZ is) (RB not) (NP (DT an) (PP (IN out) (PP (IN of) (NP (NN place)))) (NN metaphor))) (. .)))
(ROOT (S (SBAR (IN ) (S (NP (DT ) (NN )) (VP (VBZ ) (PP (IN ) (NP (NP (NNS )) (VP (VBG ) (PP (IN ) (NP (DT ) (JJ ) (NN ))))))))) (VP (VBZ ) (RB ) (NP (DT ) (PP (IN ) (PP (IN ) (NP (NN )))) (NN ))) (. )))