sentence: About pollution . It is a big issue in public transport . time if you try to fix the engines of public transport , that will be expensive , because with time the lifetime of this engine will come to an end .
modified: About pollution , it is a big issue in public transport , with time if you try to fix the machine of public transport that will be coste , because with time the live age of this machine will finish .
transformation: PUNCT, OTHER, K, NOUN, PUNCT, OTHER, OTHER, NOUN, OTHER