Assertion: black vulture's head | /r/CapableOf | keep clean
Facets:
value: meticulously
type: DEGREE
Source sentences:
text: The bald head of the lappet-faced vulture is advantageous, because a feathered head would become spattered with blood and other fluids, and thus be difficult to keep clean.
text: The head and neck, kept meticulously clean, are red to blackish-red, and have few feathers.