Assertion: african elephant's tusk | /r/CapableOf | grow at a rate of about 17 cm
Facets:
value: for adult african male elephants
type: OTHER
value: per year
type: TEMPORAL
value: continuously
type: TEMPORAL
Source sentences:
text: Permanent tusks grow continuously at a rate of about 17 cm (6.7 in.) per year, reaching lengths of up to 3.5 m (7.7 ft.) for adult African male elephants.