in a giant pile of elephant feces 
(ROOT (PP (IN in) (NP (NP (DT a) (JJ giant) (NN pile)) (PP (IN of) (NP (NN elephant) (NNS feces))))))
(ROOT (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NN ) (NNS ))))))