Assertion: headed vulture | /r/NotCapableOf | make
Facets:
Source sentences:
text: Like all New World vultures, the greater yellow-headed vulture lacks a syrinx, and is therefore unable to make any sound other than grunts or a low hiss.
text: Like all New World Vultures, the Lesser Yellow-headed Vulture lacks a syrinx (= sound-producing vocal organ), and is therefore unable to make any sound other than a low hiss.