sentence: Actually , we have a lot of problems with traffic : lots of carriages on the railway and they are n't running ; the number of cars in the street causes pollution ; crowded railways cause a late arrival .
modified: Actually , we have a lot of problem with traffic : lots of cars in the railway and it do n't running ; the number of cars in the street cause a dirty pollution ; crawded railways causes a later destination .
transformation: NOUN:NUM, NOUN, PREP, PRON, VERB:TENSE, VERB:SVA, OTHER, SPELL, VERB:SVA, ADJ:FORM, NOUN