Assertion: emu's egg | /r/HasProperty | laid by bird
Facets:
Source sentences:
text: The first chicken came from an egg laid by a bird that was not quite a chicken.
text: Measuring 6 inches in diameter and weighing up to 3 pounds, ostriches eggs are massive (though in relation to the ostrich’s own body mass, they’re comparatively smaller than the eggs laid by any other bird).