Assertion: tree frog's egg | /r/HasProperty | moist
Facets:
Source sentences:
text: The eggs need to stay moist, so the parents will take turns getting their own skin wet and sitting on the eggs, or they will urinate on the eggs.
text: Because the eggs must remain moist, male coquíes will periodically leave the nest to collect moisture in order to keep the eggs hydrated when it appears they are beginning to dry out.