sentence: Many people like to travel by bike in order to decrease the pollution which is caused by car exhaust . From my point of view , I prefer travelling by car , which is more comfortable .
modified: Many countries like to travel by bikes in order to decrease the pollution which happened by car exhausted.to my point of view i prefer travelling by cars which is more comfortable .
transformation: NOUN, NOUN:NUM, VERB, OTHER, PUNCT, ORTH, OTHER