( There ( ( were ( ( a lot ) ( of ( ( motor pools ) ( with ( ( oil-water separators ) ( plumbed ( to ( storm drains ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBD were) (NP (NP (DT a) (NN lot)) (PP (IN of) (NP (NP (NN motor) (NNS pools)) (PP (IN with) (NP (NP (JJ oil-water) (NNS separators)) (VP (VBN plumbed) (PP (TO to) (NP (NN storm) (NNS drains)))))))))) (. .)))
There were a lot of motor pools with oil-water separators plumbed to storm drains.
(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)))))))))) (. .)))