Assertion: emperor penguin's egg | /r/HasProperty | laid in may
Facets:
Source sentences:
text: Eggs are laid in May and June, they are the smallest egg relative to body size of any bird, being around 0.4kg (1.1lb) just under 1.5% of the mass of an adult bird.
text: In May or early June a single, large (460 to 470 g) egg is laid and is passed to the male parent for incubation.