Fish have gills , which allow them to extract oxygen from water using a unidirectional flow of water across the respiratory surface.
(Fish; have; gills , which allow them to extract oxygen from water) (gills; allow; them to extract oxygen from water using a unidirectional flow of water across the respiratory surface) Context(gills allow,List([10, 29))):(them; to extract; oxygen; from water) Context(gills allow them to extract,List([10, 45))):(them; to extract oxygen using; a unidirectional flow of water across the respiratory surface)
gills allow,List([10, 29)) gills allow them to extract,List([10, 45))
Fish gills them them
have allow to extract to extract oxygen using
gills , which allow them to extract oxygen from water
them to extract oxygen from water using a unidirectional flow of water across the respiratory surface
oxygen from water
a unidirectional flow of water across the respiratory surface