Assertion: gastropod's head | /r/HasProperty | mantle
Facets:
Source sentences:
text: Although the differences between the species can be stark, they all have a basic body structure in common: A head with eyes, a mantle that contains all their internal organs, a siphon for scooting around the oceans that works by expelling a jet of water, and a powerful parrot-like beak with a file-like tongue called a radula.