Assertion: giraffe's relative | /r/HasProperty | extinct
Facets:
Source sentences:
text: The giraffe has an extinct relative called the Sivatherium.
text: Their closest known relatives are the extinct climacocerids.
text: Ossicones are horn-like or antler-like protuberances on the heads of giraffes, male okapis, and their extinct relatives, such as Sivatherium, and the climacoceratids, such as Climacoceras.