Assertion: auk's beak | /r/CapableOf | hook with groove
Facets:
value: on its surface
type: LOCATION
Source sentences:
text: The black beak was heavy and hooked with grooves etched into its surface.
text: The black beak was heavy and hooked with grooves on its surface.
text: The black beak was heavy and hooked with grooves on its surface.