Assertion: african elephant's teeth | /r/HasProperty | replaced by tusk
Facets:
Source sentences:
text: Both male and female African elephants have tusks that grow from deciduous teeth called tushes, which are replaced by tusks when calves are about one year old.
text: Both male and female African elephants have tusks that grow from deciduous teeth called tushes, which are replaced by tusks when calves are about one year old.