sentence: I think it 's very important as it reduces the problems of both pollution and crowding . We use fewer vehicles as it is big and carries a lot of people .
modified: I think it 's very important as it reduce the problem of both pollution and population we use few transport as it is big and carry a lot of people .
transformation: VERB:SVA, NOUN:NUM, OTHER, PUNCT, ADJ:FORM, NOUN, VERB:SVA