Assertion: black rhinoceros's horn | /r/HasProperty | average
Facets:
value: about 0,51
type: OTHER
Source sentences:
text: They have two horns on their head, which are an average of 20 inches long.
text: The longest horn known on a black rhino was 1,2 m (4 feet 9 inches) long (they average about 0,51 m (20 inches).
text: The longest horn known on a black rhino was 1,2 m (4 feet 9 inches) long (they average about 0,51 m (20 inches).