( ( ( ( ( Slipping ( used ( motor oil ) ) ) ( into ( a ( storm sewer ) ) ) ) or ) ( ( burying it ) ( in ( the trash ) ) ) ) . )
(ROOT (S (VP (VP (VBG Slipping) (NP (JJ used) (NN motor) (NN oil)) (PP (IN into) (NP (DT a) (NN storm) (NN sewer)))) (CC or) (VP (VBG burying) (NP (PRP it)) (PP (IN in) (NP (DT the) (NN trash))))) (. .)))
Slipping used motor oil into a storm sewer or burying it in the trash.
(ROOT (S (NP (NNP Motor) (NN oil)) (VP (VBZ is) (NP (NP (DT a) (JJ harmful) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (MD must) (RB not) (VP (VB be) (VP (VBN drained) (PP (IN into) (NP (DT a) (NN storm) (NN sewer)))))))))) (. .)))