On the land, adult frogs use their lungs to breathe.
(adult frogs; use; their lungs; to breathe; T:On the land) Context(adult frogs use,List([13, 28))):(adult frogs; use their lungs to breathe; )
adult frogs use,List([13, 28))
adult frogs adult frogs
use use their lungs to breathe
their lungs to breathe T:On the land