Their respiratory system changes from gills and the animal develops lungs which allows them to leave the water and breathe air.
(them; to breathe; air) (lungs; allows; them to leave the water and breathe air) Context(lungs allows,List([68, 86))):(them; to leave; the water)
lungs allows,List([68, 86))
them lungs them
to breathe allows to leave
air
them to leave the water and breathe air
the water