sentence: Finally , there are a lot fewer traffic jams if people use public transport than if they use private cars ; the developed countries have built a public transport system so as to avoid traffic jams . Why are people not using it ?
modified: Finally , the traffic jam is much less if people use public transport than using private cars ; the developed countries have built a public transport system so to avoid traffic jam , why people not using it ?
transformation: OTHER, OTHER, PREP, NOUN:NUM, OTHER