Assertion: penguin's bird | /r/HasProperty | emu
Facets:
Source sentences:
text: Other flightless birds include rheas, cassowaries, kiwis, ostriches and emus.
text: Other birds classified as ratites include cassowaries, kiwis, moas, and emus.
text: Other flightless birds include kiwis, rheas, cassowaries, ostriches, and emus.