Assertion: caribou's antler | /r/HasProperty | flattened
Facets:
Source sentences:
text: All males and some females have dark velvety antlers that are flattened and project forward.
text: The antlers of woodland caribou are broader, thicker, as well as more compact and flattened compared to those of barren-ground caribou, while their heads and legs are also longer than the latter.