( ( ( ( Pour chemicals ) , ) ( ( cleaners , ) ( ( ( motor oil ) or ) ( solvent ( down ( the ( sewer ( or ( storm drain ) ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (JJ Pour) (NNS chemicals)) (, ,) (NP (NP (NNS cleaners)) (, ,) (UCP (NP (NN motor) (NN oil)) (CC or) (ADJP (JJ solvent) (PP (IN down) (NP (DT the) (NN sewer) (CC or) (NN storm) (NN drain)))))) (. .)))
Pour chemicals, cleaners, motor oil or solvent down the sewer or storm drain.
(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)))))))))) (. .)))