Assertion: petrel's egg | /r/HasProperty | thrown into its yolk
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Source sentences:
text: From the time of the first light, when the egg of the Emu (Dromaius novaehollandiae) was thrown into the sky and its yolk lit a fire that illuminated the world below, the bird became the alarm clock of the gods, waking the sky spirits each morning to remind them to relight the blaze.