Assertion: cassowary's feather | /r/HasProperty | double
Facets:
Source sentences:
text: They are large birds, the females standing five or six feet high (males are less in stature), and are clothed in hair-like feathers, which appear double, as the aftershaft is as large as the feather proper; these may reach a length of 12 inches or more on the rump, where they drape over the invisible tail.