Backers say ethanol can play a useful role by increasing the oxygen content of fuels and reducing harmful carbon monoxide emissions.
(Backers; say; ethanol can play a useful role by increasing the oxygen content of fuels and reducing harmful carbon monoxide emissions) Context(Backers say,List([0, 11))):(ethanol; can play; a useful role)
Backers say,List([0, 11))
Backers ethanol
say can play
ethanol can play a useful role by increasing the oxygen content of fuels and reducing harmful carbon monoxide emissions
a useful role