Assertion: gastropod's foot | /r/HasProperty | withdrawn into the shell
Facets:
value: by a powerful muscle
type: CAUSE
value: usually
type: TEMPORAL
value: in snails
type: OTHER
value: completely
type: MANNER
Source sentences:
text: The foot and other soft parts of the body can usually be completely withdrawn into the shell and the opening covered by a permanent plate called the operculum.
text: When the head and foot are withdrawn into the shell, the operculum follows to form a tight cover over the shell's opening.
text: In snails, the head and foot are withdrawn into the shell by a powerful muscle that is attached inside to the columella.