Assertion: tern's egg | /r/HasProperty | laid on gravel
Facets:
Source sentences:
text: The eggs may be laid on bare sand, gravel or soil, but a lining of debris or vegetation is often added if available, or the nest may be rimmed with seaweed, stones or shells.
text: The eggs could also be laid on the naked sand, gravel or soil, however a lining of particles or vegetation is commonly added if out there, or the nest could also be rimmed with seaweed, stones or shells.